Q. What are the applications of surface roughness testers?

Answer

A surface roughness tester is an instrument that is used to quickly determine the surface roughness and texture of a workpiece. This helps in getting accurate measurements. Also the tester can help the user obtain various parameters as well such as the depth of the roughness i.e. Rz one can calculate the mean roughness represented by Ra. The units of measurement are in microns or micrometers (µm).