The size in the beam location diameter is important so that you can correctly evaluate the profile of the sample. Typically, the smaller sized the beam location diameter, the smaller the features which might be measured. Optical profilometers and laser scanners are typical examples of non-Get hold of testers. They https://pulsardirectory.com/listings13070383/how-much-you-need-to-expect-you-ll-pay-for-a-good-roughness-measurement-equipment