Understanding Millionths of an Inch

1.0000 One Inch
.1000 One Hundred Thousandths
.010  Ten Thousandths
.001  One Thousandth
.0001 One Tenth (One Ten thousandth)
.00001 Ten Millionths
.000001 One Millionth
.000001 Inches = 1 Microinch
.0002 = 200 Millionths Micro inches and Millionths are interchangeable
Inches X 25.4 = millimeters
Millimeters divided by 25.4 = inches
Microinches X .0254 = micrometers
Micrometers divided by .0254 = microinches
39.37 microinches =.00003937 inches = 1 micrometer (micron)
.0001 millimeters =1 micrometer
.0254 micrometers =.0000254 millimeters
1 micron= 40 millionths of an inch