beijing optics

Specifying Scratch/Dig of an Optical Surface MIL-0-13830

Specifying Scratch/Dig of an Optical Surface MIL-0-13830

Specifying Scratch/Dig of an Optical Surface MIL-0-13830 The designation of surface will be given in the form of two numbers, i.e. 60-40. The first number specifies the maximum width of scratches on the surface in tenths of a micron. #80 Max width equals 8 microns#60 Max width equals 6 microns#40 Max width equals 4 microns#20 […]