Top Tips To Read A Dial Bore Gage

A dial bore gage is an instrument that measures the inner diameter of small holes. Bore gages are critical when it comes to measuring parts that have small holes in them. Typically, these versatile instruments are used as part of a quality control process to ensure that bore sizes are standardized. The dial bore gage is usually calibrated in 0.001 inches and consists of a shaft with a dial indicator situated at the top. The instrument also has an actuating plunger and the readings that it gives are usually compared to standardized measurements for analysis.

How They Work

Dial bore gages have a contact needle that lies in the head of the dial gage. When the instrument is moved (such as when taking measurements), the needle moves and transfers data to the readout or dial. Dial bore gages also have an interchangeable end that helps to set the nominal size. Dial gage operators have to set the gage to its nominal value before commencing any measurements. Here then are some tips on how to read a dial bore gage when taking measurements of a bore or cylinder.

How to Take Accurate Measurements

When taking measurements, you start by placing the bore gage in the micrometer and rotate the dial till the pointer is aligned to the zero marking on the dial face. One then places the dial gauge in the hole or cylinder being measured. One must take special care to ensure that the anvils on the instruments touch the sides of the hole or cylinder. Once this is done, the instrument operator then rocks the gage back and forth ensuring that the anvils do not lose contact with the walls of the cylinder. When this is done, the pointer will swing counterclockwise or clockwise. After a while, the pointer will start to move in the opposite direction toward zero. The machinist then records the precise measurement when the pointer starts heading towards zero.

Calculating the Measurements

This is done by simply taking the measurement at the point when the needle started to reverse itself and subtracting (or adding) the measurement the instrument is calibrated to. For example, let us assume that the instrument was calibrated to 2 inches and the instrument needle changed direction at 0.007 clockwise. The measurement of the bore in question would thus be 2.007. This is because when the needle moves clockwise, you add the two numbers. Alternatively, if it had moved anti-clockwise, we would have subtracted 0.007 from 2 inches to give us 1.993.

Advantages of Dial Bore Gages

Dial bore gages are popular with quality control operators because they are highly portable and easy to use. They also have very few moving parts and thus far less prone to breaking down than most other precision instruments. Dial bore gages also do not require sophisticated knowledge of instruments and therefore can be handled by line workers on the shop floor without much prior training.

For the best in precision instruments, get in touch with Willrich Precision. We have over 45 years of experience in delivering gaging and metrology type products to customers all over the United States.

Product Spotlight: Starrett MVR Manual Video Measuring Machine

Starrett video measuring machines allow for accurate and quick 3D measurements of small parts. These parts are typically inspected during quality control processes in manufacturing plants. In some cases, these types of measurements are taken offline to reduce environmental variables. Today, professionals can find two types of video measurement systems: automatic and manual. It is important to note that video measuring machines do not directly measure the parts but instead measure various images of a part. This machine is designed to develop a precise reproduction of the part via state-of-art optics and lighting systems

When a part is measured by a manual video measuring machine, it is moved on a manually operated workstage. The Z-axis zoom lens, however, can be motorized should the operator find it more convenient to do so. The chosen metrology software then automatically detects the part’s edges and guides the user to move the stage accordingly. No part of the video measuring system should move independently and that’s why a steel or granite base is needed to maintain overall equipment stability.

Willrich Precision is an authorized dealer of Starrett precision measurement instruments. If you are looking to get a Starrett MVR Manual Video Measuring Machine please contact us to arrange as demonstration.

About Starrett

Laroy S. Starrett founded the L.S. Starrett Company. Since their inception in 1880, the company has been manufacturing precision tools, gages, measuring instruments, and saw blades for a wide range of consumer, professional, and industrial markets across the globe. Today, there are over 5,000 different types of products to choose from. Starrett is recognized for their unrivaled standards for fine precision tools for over 130 years. This has allowed the company to be known as the World’s Greatest Toolmakers.

Features of the Starrett MVR Manual Video Measuring Machine

Here’s a quick look at some notable features of StarrettMVR Manual Video Measuring achine:

  • Comes with a granite base
  • Ring light LED surface illumination
  • Collimated LED sub-stage illumination
  • Features a color digital video camera
  • Video edge detection (VED) capabilities
  • Field-of-view (FOV) measurements (can be integrated with stage motion)
  • Compatible with MetLogix M3 metrology software
  • Motorized Z-axis positioning with variable speed controls
  • Manual X-Y positioning via hand heels
  • X and Y accuracy of 3.5µm + 5L/1000
  • Z accuracy of 2.5µm + 5L/1000
  • Requires at least a Windows 7 Professional operating system to enable network connectivity

Get Starrett MVR Manual Video Measuring Machines from Willrich Precision!

Willrich Precision offers Starrett MVR manual video measuring machines at the most competitive rates. Our company has been in business for more than 45 years and provides top-notch products in the gaging, inspection and metrology industries. We are also ISO:9001:2008 Registered and can provide professional calibration and repair services. Enjoy complete peace of mind knowing that our stellar measurement products and gages can cater to the diverse inspection needs of automotive companies, the military, aerospace companies, and much more.

To know more about our Starrett MVR Manual Video Measuring Machines and the benefits that they provide, do not hesitate to contact us today.

Understanding The Practicality Of Hardness Tests In Materials Production Processes

You may have heard of hardness tests in quality control processes. Hardness tests can tell quality control officers a lot about a product. It offers insights into the flexibility, strength as well as the durability of a product. Hardness tests are performed on all types of products including raw materials and finished products. Hardness testing is easy to perform and is usually non-destructive. The test does not require major alteration to the product and advancements in technology mean that modern instruments give highly accurate readings.

How Hardness Testing Has Changed

In previous years, scratch tests were conducted to determine the hardness of a part. The testing was based on an object that had increasing hardness from one point to another. Testing was done by having the part being tested scratch various points of the bar. The level at which the part could produce a scratch on the object determined its hardness. As industries progressed, quality control officers began to use diamonds and even steel balls to determine how hard an object was. Regardless of which method, these approaches were slow and were not suited for the high-pressure demands of modern industries. For this reason, more refined instruments were developed to measure the hardness of a product.

Modern Methods of Hardness Testing

There are a variety of hardness testing approaches today. Some of these include the Rockwell Method as well as the Knoop approach. Rockwell works best with metals and alloys and is favored for the quick results that it produces. On the other hand, the Knoop approach works best for thin materials and coatings. Some hardness measuring instruments can give results very quickly and are highly portable. Modern hardness instruments leave an indentation that is so tiny that it is almost unnoticeable or does not affect the functionality of the product. For instruments that leave a much larger indentation, the indentation mark can always be sanded out so that it is not noticeable at all.

How Hardness Tests are Done

Various tests use different approaches to measure hardness. For example, the Rockwell hardness test process relies on making a small indent on the part being measured by applying a relatively small load on the indenter. This helps to establish the zero-datum position. Once this is done, a bigger indentation is made using a larger load. The difference between the first indentation (depth) and the second helps to establish the required reading. Typically, the process makes use of a diamond cone for testing metals and tungsten is used to test softer materials.

Importance of Hardness Testing

Tests done on the hardness of a material helps to determine the structural integrity of a product. This, in turn, helps manufacturers know whether the product will perform as expected in the market. We can thus say that hardness tests help consumers to use products safely and for long by helping eliminate those that are structurally unsound.

For the best in precision instruments, get in touch with Willrich Precision. We have over 45 years of experience in delivering hardness testers to customers all over the United States.

In The Limelight: Ra Measurements

Ra is a unit of measurement that is used to express the average roughness of a surface finish. Ra is especially useful because it shows the average deviation that a surface has in comparison to a mean line. However, Ra works great for general applications but faces some limitations when it comes to very specific measurements.

It also might be inadequate for machinists and quality control experts who deal with sensitive equipment. This is because any slight deviation on the surface finish can affect the performance of a part in a significant way.

Understanding How Ra Works

One of the things a machinist must understand is the relationship between the average roughness and the surface finish in general. Surfaces with varying profiles can still have a similar Ra value but the different profiles mean that these parts work differently.

For example, if a part has scratches on its surface, there is a risk that is might fracture prematurely. This calls upon machinist to ensure that they consider the surface features relative to the functionality of the part.

A More Efficient Approach

Sometimes, machinists and quality control officers recommend very tight Ra parameters in order to try and guard against scratches and peaks. This leads to a lot of wastage and is not a very efficient way of dealing with such issues.

Engineers who understand the relationship between Ra values and the surface finishes know that it is easier to clear off the peaks rather than try to use high-tolerance Ra specifications. This approach allows them to achieve the same results but in a far more economical and competitive way.

While this may sound abstract, the ability to do this makes all the difference when it comes to competitive bidding. This is because the former is able to present more competitive bids while achieving the same exact quality specifications.

Getting the Right Average Roughness

When you are machining a part, it is critical to remember that different machining processes produce different kinds of tool patterns. A good example is the roughness that comes from grinding. This is generally of a shorter wavelength as compared to turning. When a part surface undergoes milling, there are even longer wavelength patterns. Sing point boring generally produces the longest wavelength patterns.

Keep in mind that the wavelength we are talking about is the spacing between individual toolmarks and not how wavy the surface of the part is. When taking the Ra values of a surface, care must be taken to ensure that the measurement is not affected by the waviness. This is done by making sure that the cut off length is short enough. At the same time, it must not be too short otherwise only a part of the tool mark is measured. Ideally, use a cutoff length that can include five complete sets of toolmarks.

Need An Excellent Mobile Roughness Tester? Try MarSurf PS 10!

With many manufacturing processes, there is always an emphasis on the quality of a product or part surface. For some products or parts, the surface finish determines how well the part functions. For example, too much roughness on a surface might weaken a part by making it more likely to crack and fail. This is especially true for parts that are subject to contact and thus friction.

Measuring Surface Roughness

The need for accurate measurements when it comes to surface roughness means that that quality control must have the right tools for the job. Not only must these products be very accurate but they must also be able to give quick results. This is because in a production setting, delays in the production line can mean loss of revenue for the organization. Sometimes the parts being measures are too heavy so they can’t be moved to the quality control room. In such cases, it becomes critical to be able to have the measurement instrument on the production floor. This reduces the time spent checking parts and thus saves the business money.

Introducing the MarSurf PS 10

The MarSurf PS 10 mobile roughness tester is one of the best in this category. The MarSurf PS 10 features state-of-the-art features such as a smartphone display that allows for easy use. The roughness tester also has internal memory for data storage but also the capacity to connect to a computer for the transfer of data. Its rechargeable data source allows for around 500 measurements and which increases its mobility. Its small size makes it very portable and very handy in a factory environment.

Other Features of the MarSurf PS 10

            •           Features a clear and adjustable display

            •           Data can be stored as TXT, CSV, X3P or PDF

            •           PDF documents can be created in the instrument

            •           Can undertake 1200 and above measurements between recharge

            •           Features a detachable drive unite

            •           Features the same number of functionalities as laboratory equipment.

            •           Has a favorites function that allows you quick access to commonly used functions

            •           Easy to use thanks to the automatic cutoff selection feature

Top Mistakes To Avoid When Using Thread Gauges

thread gauges

Thread gauges are used for a wide variety of industrial operations and can be considered as equipment that is essential. As an owner of a thread gage, it is important to note that maintenance is necessary in prolonging its lifespan and productivity. However, it is very common for serious mistakes to be made when using this type of gage that can affect the efficiency and condition of the equipment. Ensuring that you avoid these mistakes can help you to prevent any malfunctions of your thread gage. Here at Willrich Precision Instruments, we provide a wide variety of different precision instruments that are made with the finest materials and guaranteed to withstand the test of time.

Exposure to Temperature Extremes when Storing Your Thread Gauges

Obviously, as a precision instrument, the most important thing to maintain in a thread gage is its precision. These gauges are made using metals that can be sensitive to temperature and can either expand or contract depending on the extremes. This change in size of the thread gage can compromise the precision of the thread gage. Thus, you should only store your gauges in a storage area that is not affected by the extreme temperatures as the result of the climate. Additionally, make your best effort to store your gauges in a place where there is as little humidity as possible in order to prevent rust from ruining the quality of its performance.

Allowing Your Thread Gauges to Become Dirty

The dirt that gets trapped in between the parts of your thread gage can negatively affect its functionality and can decrease the precision of the instrument. Therefore, it makes sense to schedule regular cleaning of your thread gage so that proper maintenance of the parts is carried out. Additionally, in the industrial environment, workers’ hands can become contaminated with oil or other substances that can affect the performance of the gauges as well. As such, thread gage operators should be trained to clean their hands before touching the gauges so as to prolong the life and increase the efficiency.

Failing to Lubricate Your Thread Gauges Adequately

Lubricating your thread gage is essential in preventing any corrosion of the parts. This also ensures that the entire system works seamlessly. What you can use for lubricating your thread gage includes oil-based easy-peel wax coatings.

Not Keeping Track of the Accuracy of Your Thread Gauges

It is inevitable and only natural that your gauges become less accurate over time. This would require you to regularly recalibrate the thread gage and document the changes of its accuracy. Ensure that the dates which you carry out the recalibration are documented properly and that the schedule is in line with the recommendations of the manufacturer.

Not Training Your Thread Gage Operators

The easiest way to make sure that your thread gauges are treated and used in the right way is to give your employees who operate the thread gauges proper training. The training should encompass how to use the equipment and also how to engage in proper maintenance so that it can stay efficient for years to come.

Whenever you have new employees, it is always wise to give them proper training as to what the right storage methods and maintenance procedures are. Be sure to hand out manufacturer manuals so that they can learn how to avoid malfunctions and engage in proper safety procedures as well.

Things You Need To Know Before Choosing An Ultrasonic Thickness Gage

ultrasonic thickness gage

Before you choose your ultrasonic thickness gage, you have to consider a number of factors. Some of the obvious factors include your budget constraints and also the reason you are buying it for. However, if this is your first-time purchasing equipment like this, then you might not be familiar with some of the other factors which might not be as obvious. It is important to note that these factors might be equally worth considering when choosing an ultrasonic thickness gage from such a competitive market. Furthermore, there are many factors that you need to consider when talking about the application of the instrument.

Before choosing the one that you want to get, you should find out exactly what you can and cannot do. Here at Willrich Precision Instrument, we provide a wide range of metrological products for any of your industrial needs.

Ultrasonic Thickness Gages Explained

Ultrasonic testing to measure thickness is becoming a very popular method. The main reason for using this device is that it can test the thickness of a wall without any form of destruction. It is usually used for the detection of thinning walls as a result of corrosion or as a method used for quality assurance. It can also be used for measuring boilers, aircraft materials, and even pipes.

The market for ultrasonic thickness gages is extremely competitive and there are many different manufacturers. The entry-level handheld units might cost as low as a few hundred dollars and can reach up to thousands of dollars. Usually, the software used for such products are very similar, but manufacturers can alter the internal software to cater to more specific needs. Many companies around the world offer the option to upgrade their products. As a result, a simple thickness gage can be upgraded to a device with datalogging capabilities and live waveform features.

The Material of Your Ultrasonic Thickness Gage

It is essential that you also list out the materials and the range of thickness for each material that you might want to test. Additionally, you should note down the accuracy that you want to achieve, the temperature when you are taking the readings, and the finish of the materials. In the case where a fluid can be applied to it, the fluid is most likely soluble in water and suitable for use with high frequency sound waves.

Considering the Weight and Size

When contemplating which model to purchase, some factors that you should consider include the weight and size of the ultrasonic thickness gage. Firstly, you must check if you have sufficient storage space for the size that you are looking for. Some ultrasonic thickness gages are compact and portable. They can even fit inside your pocket because they utilize AA size alkaline batteries that everyone knows are extremely portable.

On the other end of the spectrum, there are much larger gages because of the battery that they use. For example, if you need long-lasting battery life that uses latest lithium ion technology, then chances are your unit will be much larger. Additionally, you should consider how easy it is to service the unit that you want to buy, bearing in mind the place of manufacture and their reputation in this industry.

The Four Main Types Of Coordinate Measuring Machines

coordinate measuring machines

If you have no prior knowledge about coordinate measuring machines, then this article is for you. In the current market, there are four main types of coordinate measuring machines. These include the bridge, cantilever, gantry and horizontal arm coordinate measuring machines. They all have their own advantages depending on the components that you want to measure. Here at Willrich Precision Instrument, we understand that buying a coordinate measuring machine might not be as simple as you think. There are many types and factors to consider. However, we provide a wide variety of precision instruments for any of your industrial needs.

Bridge Coordinate Measuring Machines

Bridge machines have become increasingly popular over the years. This type of measuring machine allows for probe movement along 3 different axes, X,Y and Z. The unique thing about this machine is that each axis contains a sensor that can judge the position of the probe on any particular axis. It is capable of doing this with micro-meter precision. The bridge machine produces something called a “point cloud” which is done by sampling the three sensors and measuring a particular point on the object.

They have a very simple structure and is easy to use. Bridge machines are also cheap to manufacture and can withstand the test of time by maintaining accuracy consistently. Usually, bridge machines are fixed on a precision granite plate and have two legs to support the carriage. It is interesting to note that a typical bridge machine is only driven on a single side while the other sides are allowed to float freely. Close to 95% of them utilize air bearings so that there is greater ease of movement.

Cantilever Coordinate Measuring Machines

The cantilever coordinate measuring machines are typically used to measure smaller parts. In comparison to the bridge machines, they grant access to the user on three different sides. They also only allow for probe movement on X and Y, creating limitations on the size of the X beam. The rigidity of the machine makes it only suitable for measuring smaller parts. This type of machine will work well in a shop-floor setting because it has automatic loading and unloading capabilities as well.

Gantry Coordinate Measuring Machines

This type of machine is made specifically for measuring parts that are larger in size and heavy in weight but require the precision of a bridge coordinate measuring machine. Typically, gantry machines work best mounted to the floor. Thus, it is important that you provide it with a solid foundation. The smaller machines utilize four upright columns that support the Y-axis beams. On the other hand, larger gantry machines have 6 to 8 columns in relation to the length of the Y-axis.

Horizontal Coordinate Measuring Machines

The horizontal arm machine was first manufactured in Germany and were originally used as scribing tools. The first models were operated manually and were much harder to use as compared to today. The horizontal arm machine is different from the other three types in the sense that is has 2 axes mounted on a saddle that moves up and down the horizontal axis.

Product Spotlight: Phase II PTG-4000 Coating Thickness Gauge

coating thickness gauge

In this post, you will find out more about an excellent coating thickness gauge that can make this task easier. Introducing the Phase II PTG-4000 Coating Thickness Gauge. Coating thickness gauges or paint meters are typically utilized to measure a product’s dry film thickness. Also known as DFT, it is one of the most measurements in the coatings sector. This type of information significantly impacts the chosen coating process, cost, overall and quality. In addition, DFT measurements can help determine the overall service lifespan of a coating, the product’s performance / appearance, and ensure compliance with International Standards.

DFT can be measured via two methods: non-destructive and destructive. The former involves using a cutter to cut a coating to the substrate. The latter involves using magnetic induction techniques that do not damage the coating and substrate. In addition, it is recommended when taking measurements on magnetic and non-magnetic metal surfaces such as aluminum and stainless steel. If you want to measure coating thickness on metallic substrates, consider using digital coating thickness gauges.

About Phase II

Phase II was founded in 1981 and is recognized as a leading manufacturer of cutting tools, precision measuring tools, material testing instrumentation, machine tool accessories, and other shop supplies. The company also has a world-class reputation for service and quality. It is comprised of in-house application specialists who can guide customers through product selection and maintenance. Today, Phase II provides specialty product manufacturing and development solutions. This means that they can work with customers on any type of merchandise from design stage through completion. In addition to providing precision measuring tools, Phase II specializes in gage calibration and certifications services as well.

Enjoy complete peace of mind knowing that Phase II is a reputable brand because it has exhibited in major tradeshows throughout the United States, Mexico and Canada. Phase II is also affiliated with the American Society for Nondestructive Testing (ASNT), the American Measuring Tool Manufacturers Association (AMTMA), and the American Society for Testing and Materials (ASTM International).

Features of the Phase II PTG-4000 Coating Thickness Gauge

Here is a quick look at some of the top features of the Phase II PTG-4000 Coating Thickness Gauge:

  • Works for ferrous and non-ferrous substrates
  • Comes with a full-color display and flip screen feature
  • Range: 0-50 mills / 0-1,250 microns (in terms of mean, min, max, and deviation)
  • Weighs 2.4 oz. (without batteries)
  • 100 x 52 x 29mm
  • Requires 2-AAA batteries to operate
  • 302 degrees Fahrenheit max surface temperature of test object
  • Min. substrate thickness: 2 mils for non-ferrous materials and 20 mils for ferrous materials
  • 30mm (concave) and 3mm (convex) min. radius of curvature
  • 5mm x 5mm min. measuring area
  • Selectable single or continuous measurement option
  • Available statistics such as mean, min, max, and deviation
  • +/-3%+0.1 mil accuracy
  • 0.1 mils resolution

Get the Phase II PTG-4000 Coating Thickness Gauge from Willrich Precision!

Willrich Precision has been in business for over four decades and offers Phase II PTG-4000 coating thickness gauges at very competitive rates. Our products are used by technicians from a wide variety of industries, including aerospace, medical, pharmaceuticals, energy, automotive, military, and more.

If you wish to know more about the Phase II PTG-4000 Coating Thickness Gauge, do not hesitate to talk to a Willrich specialist today!

Choosing The Right Hardness Tester For Your Needs

hardness tester

Hardness testers are essentially devices that can accurately tell you the hardness of a certain material. This is done by taking into account the effect that an indenter (usually made from hard steel or diamond) has on the surface of the material. The depth of the penetration into the material is measured and from this the hardness can be taken. Here at Willrich Precision Instrument, we understand the difficulties one might face when choosing a hardness tester because of how many different types, brands and models there are in the current market. We specialize in hardness testers and other high-quality metrology instruments that can suit the industrial needs of all our clients.

The Different Kinds of Hardness Testers

In the current market, there are two main types of hardness testers. They can either be bench hardness testers, also known as stationary or classical hardness testers. On the other hand, they can be portable hardness testers, more commonly known as mobile or electronic hardness testers.

Bench Hardness Testers

As the name suggests, this is a very classic hardness tester that can measure the hardness of materials using traditional methods such as Brinell, Vickery or Rockwell. Usually, when you are looking for a hardness tester that uses the Vickery method for example, it will be called a “Vickery bench hardness tester”. As the word “bench” suggests, there are also some bench top hardness testers in the market that can allow the user to measure the hardness by a few different hardness scales. There are actually some hardness testers that can measure with a combination of scales. All bench top units are big in size and can be very heavy, with some models being over 50 kilograms. They have to be mounted on a table or the floor, which allows for easy measurements using the direct method.

Portable Hardness Testers

In contrast to the bench hardness testers as mentioned above, portable hardness testers are obviously much smaller in size. They are also much lighter in weight. Additionally, being much more compact than bench hardness testers, they can measure the hardness of your materials with some scale violence. There are several advantages to using portable hardness testers. For example, you can bring the device with you easily from home to the workshop to measure the materials that you want to test.

Portable Hardness Measuring Instruments

These are also portable like the testers, but the main difference is that they are electronic devices. What this means is that there is usually a larger range of features that you might not get with an analog device. For example, you will be able to save the results on the device’s internal memory. This would greatly increase the convenience for users because the measurement results can then be transferred to a computer so that reports can be created. The reports can be created using specialized ARM control programs that are more common in portable hardness testers. However, there are very rare cases where some tests can only be carried out by bench hardness testers. In all other cases, portable hardness testers work just fine.

Why Hardness Testing Is Essential

The hardness of a material is its inherent property that allows it to withstand abrasion, bending, scratching, cutting or deformation. If your day to day work involves materials manufacturing, you are most likely aware of the importance of a hardness test in allowing you to evaluate the products received from external suppliers and also, the production process of internally manufactured products.

Baseline measurements have to be defined and set in place in order to make sure that your products meet the required quality specifications in terms of strength. However, if you are new to the field, you might be unaware that the hardness of any material is not an intrinsic property but rather, the value obtained from a hardness test stems from a specific measurement sequence. Read on to find out more about hardness testing and how it can be performed!

Types Of Hardness Testing

For many materials in the 21st century, a hardness test comprises of using a device that impacts the material with a defined amount of force over a specific amount of time before measuring the depth of the groove left behind. The commonly used hardness tests that measures the relationship between hardness and the depth of the indentation can be classified into the Rockwell, Brinell and Vickers hardness test.

Rockwell Hardness Test

Rockwell hardness tests is one of the most commonly used hardness tests in the market due to its fast speed and high accuracy in determining the hardness of numerous materials such as metals, plastics and allows. When conducting this test, a hardened steel ball indenter or a diamond cone would be pushed into the material with a test force of 10kgf. Upon attaining equilibrium, more force would be used in order to cause a greater indentation depth. Once equilibrium is reached again, the force is removed, and the permanent depth of the indentation made would be used to determine the Rockwell hardness number of the material.

Additional Benefits Of Hardness Testing

By conducting a hardness test, the results obtained can be used to predict and determine the extent whereby the tested material can perform under various conditions. For example, by measuring the hardness at various temperature and humidity conditions can simulate and allow you to know if the hardness of the material would be impacted by storing it in a humid warehouse. If the hardness measurements remained constant, it indicates that the material can be stored normally. Otherwise, special precautions must then be taken to ensure proper storage of the material. Another instance would be testing the material’s hardness under prolonged exposure to various chemicals. This would allow you to determine the material’s resistance to chemicals and if special caution needs to be taken to ensure the functionality of the material is not affected by a chemical exposure.


All in all, a hardness test is a crucial test that you must adopt in ensuring that your product meets the stated quality specifications.

At Willrich Precision Instrument, we provide a large selection of hardness testers that would definitely meet the rigorous needs of your business! Browse through our exciting inventory and shop for quality surface roughness testers today. If you need assistance with any product purchase, call us at 866-945-5742 or email us at today.

Understanding Bore Gages

A bore gage is an instrument that is frequently used to measure the internal of a hole. It is also known by many names such as bore mics, hole tests, holtests, internal micrometers or cylinder tests depending on your geographical region. It operates on the basis whereby parts known as the anvils expanding outward in order to determine its diameter when inserted into the hole. Read on to find out more about the characteristics and uses of bore gages.

Types Of Bore Gages

There are numerous types of bore gages in the market, with the more common types being bore gages with two or three anvils respectively. Bore gages with two anvils are cheaper and are calibrated with gauge blocks whereas those with three anvils are known as internal micrometers and are calibrated with setting rings. Both types can make use of either a digital or dial scale to display the measured diameter of the hole. Apart from the common bore gages, there are also more specific types specializing in various measurements, such as the dial bore gages, small hole gages and telescopic bore gages.

Sizes Of Bore Gages

Depending on the diameter of the hole that you are measuring, you would require different types of bore gauges that have various measurement sizes. If you are looking for a bore gage that can measure a wide range of sizes, an adjustable bore gage would be the equipment that is suited for your needs! However, this type of gage suffers from a lower tolerance in the measured diameter. If a high degree of accuracy is demanded in the final product, plug gages, which comes in fixed sizes would be the equipment that you have been looking for. Plug gages can be customized accordingly to your requirements, making them available in both small and large sizes.

Uses Of Bore Gages

With the high level of precision obtainable in a bore gage, there are many applications where it can be used such as the measurement of pipes, holes and cylinders, which are commonplace in the manufacturing, automotive and equipment calibration industries. Inspectors and maintenance staffs utilize bore gages to inspect the dimensions inside injection moldings to ensure that its quality are up to the desired standards, or in extruder barrels to monitor wear and tear over an extended period of time to find out when preventive maintenance can be carried out. Mechanics and machinists also make use of these equipment to detect the extent of wear and tear in cylinder heads and also to accurately measure holes in an engine block to ensure that the pistons fit tightly to prevent any gas leakages.


With the numerous potential applications of bore gages and its ease of customizability in terms of types and sizes, it serves as a handy tool that can greatly assist you in the measurement of a hole’s internal diameter.
At Willrich Precision Instrument, we provide a wide range of bore gages that would definitely meet the rigorous needs of your business! Browse through our exciting inventory and shop for quality bore gages today. If you need assistance with any product purchase, call us at 866-945-5742 or email us at today.

Product Spotlight: Mitutoyo Linear Height LH-600E / EG Height Gage – 2D Measurement PROMO

Height gages are measuring devices designed to determine the height of a wide range of objects. One can use these devices to mark items that are being worked on. Today, height gage technology has gone through various stages of evolutions. These gages now have the ability to meet strict quality measurement demands of most precision laboratories. Regardless of where and how these gages are used, height gages have certainly stood the test of time and is an essential tool in every modern workshop.

If you are looking to get reliable height gages, you should consider getting our Mitutoyo Linear Height LH-600E / EG height gages. Mitutuyo’s products are recognized for their best-in-class accuracy. Their highly accurate guiding mechanisms and scale units are manufactured in Mitutoyo’s dedicated scale plant. Additionally, these gages have a measuring range of 0 – 38 / 0 – 972mm and a displacement accuracy of 1.7 μm (when measuring a height of 600mm). Do keep in mind that we are rolling out a limited time offer with the codes: PROMO 027 and PROMO 028. You can enjoy complimentary accredited calibration (a2la 0750.01) and other shipping benefits.

About Mitutoyo

Also known as Kabushiki Kaisha Mitsutoyo, Mitutoyo Corporation is a renowned Japanese MNC that designs and manufactures measuring instruments and other types of metrological technology. Founded in 1934 by Yehan Numata, the company is headquartered at Takatsu-ku, Kawasaki, Kanagawa. itutoyo started out by making high-quality and affordable micrometers for
manufacturing facilities. When it expanded over the next several decades, the company increased its product offering by focusing on mechanical, dimensional gaging products such as dial indicators, calipers, and other measuring tools.

In 1963, Mitutoyo America Corporation was formed and was headquartered in Aurora, Illinois. Located in close proximity to Chicago, this branch offered a full product line of precision measuring instruments, tools,
and equipment with a wider distribution network and even offered training
programs, service support, and software development services. The goal was to form a comprehensive metrology organization.

Features of Mitutoyo
Linear Height LH-600E / EG Height Gages

Here’s a quick look at some notable features of Mitutoyo Linear Height LH-600E / EG Height Gages:

  • Digimatic tool can be used for seamless data entry
  • Comes with a power grip
  • One-key operation while performing semi-automatic measurements
  • USB / RS-232C data output
  • Basic statistical function
  • Allows operator to adjust air-cushion height via semi-floating or pneumatic full system
  • Guaranteed straightness of 4μm
  • Guaranteed perpendicularity (frontal) of 5μm
  • Excellent accuracy

Get Mitutoyo Linear
Height LH-600E / EG Height Gages from Willrich Precision!

Willrich has been in business for over four decades and is
recognized for our unmatched products and services in the metrology, inspection, and gaging fields. If you are looking to get top-quality and reliable Mitutoyo height gages, we have everything you need in one place. You can enjoy complete peace of mind knowing that our company is ISO:9001:2008 Registered and can provide repair and calibration services. Whether you require height gages for military or medical applications, we have got your back with best in class products.

To know more about our Mitutoyo Linear Height LH-600E / EG height gages and the benefits they provide, do not hesitate to contact us today.

A Short Course On Measuring Pitch Diameters

Do you know that bolts, tapes, dies and other helically threaded components are characterized by various parameters? These parameters include depth, angle, pitch, major and minor diameters, whereby the pitch diameter holds the most significance amongst these parameters. Read on to find out more about the importance and the process of measuring pitch diameters!

What is a Pitch Diameter?

To many of us, the effective diameter, also known as the pitch diameter, refers to the diameter of the cylinder as it cuts the midpoint of both the major and minor diameters known as the pitch line. The pitch diameter is an important property that governs the compatibility between two threaded parts, such as nuts and bolts and if they can be successfully mated with each other. Moreover, they are also used as a crucial reference for other relevant thread measurements.

Measurement of Pitch Diameter

Due to the large susceptibility of pitch diameters to measurement errors, unique measuring equipment must be used in order to obtain an accurate reading. Although there exist many types of techniques to measure pitch diameter, there exist three most commonly utilized methods, namely the three-wire measurement method, the optical comparators and specialized micrometer screw gages which ensures the accuracy of your reading!

Three-Wire Method

The three-wire method makes use of a traditional, flat anvil micrometer screw gage to measure pitch diameter. Three separate wires of pre-measured diameter would be placed within the pitch of the threads before the gage of the wire is chosen. This enables the wires to stay in contact with the pitch line while simultaneously extending beyond the outside diameter of the thread. With another micrometer screw gage, the distance between the wires on the opposite sides are measured and used as inputs in prescribed formulas to derive the pitch diameter.

Optical Comparators

Optical comparators make use of the fundamental basis of optics and light to determine the pitch diameter. A magnified silhouette of the threaded object is projected on a screen and a specialized software would be used for image analysis and to obtain the pitch diameter. Through the use of optical comparators, it would result in a high degree of accuracy in pitch diameter measurements. However, a downside of it would be its expensive cost!

Specialized Micrometer Screw Gages

A commonly used instrument would be a form of micrometer screw gage known as a thread mic or a pitch mic. It was designed for the purpose of measuring the pitch diameters of cutting threading tools. To make use of this instrument, the ratchet of the micrometer is turned continuously until the spindle comes into contact with the thread flanks. The pitch diameter can then be read off from the micrometer scales. This method provides an efficient and accurate, but yet a low-cost way of measuring the pitch diameter!

At Willrich Precision Instrument, we provide a large selection of thread gages that would definitely meet the rigorous needs of your business! Browse through our exciting inventory and shop for quality thread gages today. If you need assistance with any product purchase, call us at 866-945-5742 or email us at today.

A Guide To Measuring Surface Finishes

The finish, or surface texture of a finished component can be viewed differently from two different perspectives. For the designer, variations of surface texture would affect the functionality of the component. If the designer wishes to change the component’s functionality, the surface texture specification must be altered. From the machinist’s point of view, the finish is the end product of the manufacturing process and it can be altered by modifying the manufacturing process. Read on to find out more about measuring surface finishes and the various parameters involved!

Variations In Surface Finishes

Surface finishes contains the troughs and crests that comprises the surface and the direction of the surface. Through the usual machining processes such as grinding, milling and turning, uneven sections are being imparted onto the component’s surface. Moreover, other factors such as the vibration, speeds, condition of the machine tool and the choice of machine tool can also affect the extent of these irregularities. As a result, these factors must be carefully controlled.

Components Of Surface Finishes

Surface finishes can essentially be classified into 3 segments:

  • Roughness: Roughness stems from the usage of cutting tool that leaves a mark with a distinct depth and width. Also, in the cases of grinding, the abrasive granules on the wheel can also leave a groove on the surface of the component that is being produced.
  • Form: Form can be attributed to a lack of straightness or flatness in the machine’s cutting tool, resulting in the component’s surface finish being affected. This results in a systemic deviation from the specified requirements whenever the machine is being used.  
  • Waviness: Waviness of a component is defined as small variations in the length between the cutting tool and the produced component during the manufacturing process. These variations are caused by the instability of a cutting tool due to vibrations. The source of vibrations can be internal such as the motor of the machine or even externally induced due to the operations of other machines nearby. The waviness of the component can be measured by a contour measurement device.

How To Measure Surface Finishes

All of the above-mentioned surface finish components exist simultaneously and each condition is checked
separately. By measuring these components, the search for the origins of the error can be narrowed, allowing its effects to be reduced or eliminated. There are many instruments available in the market that would enable you to measure these 3 components, such as a pocket-sized, battery-powered gages. Its low price allows for the measurement of a small number of roughness parameters at an affordable cost. Furthermore, these instruments are also very flexible and are very easy to use. If you require more complex parameters to be measured, more precise equipment but expensive that involves powerful computers would be required!

At Willrich Precision Instrument, we provide a large selection of surface roughness testers and form measurement that would definitely meet the rigorous needs of your business! Browse through our exciting inventory and shop for quality surface roughness testers today. If you need assistance with any product purchase, call us at 866-945-5742 or email us at today.

Understanding The Role Of Force Measurement In Linear Drives

force measurement

Force is defined as an interaction that has the ability to change the direction of an object. This, however, is only on the condition that the process is unopposed. Force is capable of making any object with mass to alter its velocity and this also includes objects that were initially at rest. Force takes many forms but is inherently either pull or push action applied onto an object. Force tends to have magnitude (how much of the force is being applied on the object) and it also has direction. For this reason, force always has a vector unit. When looking at force, there are certain concepts that one needs to understand.

Key Terms to Understand

There are a number of concepts that are common when talking about force. Thrust refers to the process of increasing the velocity of an object. There is also drag which counters the effect of thrust and decreases the velocity of an object. Another common term that is used when discussing force is known as torque which affects the rotational speed of the object in question. Another term that is common in this field is static. This refers to the description of objects that are at rest. In such cases, there is zero force acting on the object. Static can also happen when there are two opposing forces of equal magnitude acting on the object.

How is Force Measured?

There are various technologies that are used to measure force. These include Thin-film technology where a sputter process is utilized to achieve an atomic bond between the measuring bridge and the measuring cell body. This process is very ideal for measuring force in highly automated processes. Another common approach is to use a strain gauge where a resistance meander is attached to a strip of foil and this is then attached to the point where force is being applied.

Linear Drives

Linear drives are systems that cause translational movement. Because machine elements accelerate in a straight line, it’s logical to have force measurement in those drives as transformational change is taking place. Drive elements have traditionally been driven by hydraulics or are pneumatically powered. This is increasingly changing, and these kinds of drives are being replaced by electric motors, mechanical thrust units or a combination of both. Although these modern systems work through modular systems, they can be adapted to specifically match the needs of the user. The modern systems also have a greater degree of versatility. The only drawback of these systems is that you can no longer measure the pressure of the system.

Advantages of Force Measurements

Force measurement can be done with any linear drive. When you are looking to make precise force measurements, you can place the force transducer anywhere within the system. This will not affect the accuracy of the measurements that you take. Whether you place the force transducer on the actuator, the motor or the precise point where the force is being applied, you are still likely to get the right results.