Metrology World

Optical comparators are used to magnify an image of a part to gather a tremendous amount of information about that particular part in a short time. For those who are not very familiar with these kinds of machines, optical comparators are measurement tools that magnify images onto a glass screen using mirrors, lenses, and illumination sources for the purpose of making two dimension measurements.

Optical comparators have been used for more than five decades and they still remain a cost-effective and versatile technology for monitoring the quality and processes of a wide range of manufactured parts. Over the years, optical comparators have evolved into full-featured equipment that uses modern optical, electrical and mechanical technology to maximize cost savings and minimize inspection time. So, why should you invest in optical comparators?

Here, we will take a look at the concept of measurements at a high precision level. If you have a career in metrology, precision measurement is already an everyday part of your life. By nature, the world of measurements is complex. That said, the following will be a rather simplistic view of the principles of measurement, how it works, important factors in measuring, and how tools should be correctly used for measuring.

For a most fundamental measurement understanding, there are three all-important terms that are frequently used incorrectly, confused as having the same meaning, and that get mixed up – but which should be aptly understood – resolution, precision, and accuracy.

Micrometers, calipers, and scales are some of the measuring instruments that are used in a wide range of manufacturing processes because they are cost-effective and easy to use. If you are just looking to get a quick indication of a part’s size, they will suffice. However, these tools require a skilled operator and proper alignments must be made to produce reliable results. That’s why their measurement speed, performance, and accuracy are sometimes limited.

If you are looking for alternatives that can help you qualify parts in an easier, faster, and more accurate method, you should look at variable gaging. These gages can help you compare a part to an external standard and more without much operator involvement and influence. Let’s find out more on what variable gaging can do for you!

There can be no denying that especially in the last quarter century, metrology has advanced by leaps and bounds. Optical technology, 3-D scanners, and the advent of lasers have all served to evolve metrology to where it is today. So it only makes sense to assume that new developments, improved inspection, advanced quality control, and more will continue to evolve and make the manufacturing process one that is ever-changing. What will the next ten years bring?

Everyone knows that it is important to check the quality of shiny coatings, measure surfaces that are about to be coated, and more. What’s more, it allows coating chemical manufacturers, electroplating firms, plastic parts producers, etc., to safely document and assess surfaces. The question now is how you are going to do that. What methods should you use for testing and quality control for plastic coatings? Let’s find out more!