Roughness is the property of the surface of an object made up of intrinsic geometric micro-imperfections or resulting from mechanical processing.
The measuring instruments that allow us to measure roughness are the surface roughness testers.
The roughness tester therefore allows to measure and evaluate the micro-irregularities of a surface and is able to measure with an accuracy that can reach the thousandth of a micron.
Roughness measurement is a numerical parameter that is obtained with the recording, and subsequent analysis, of the surface profile obtained along a given measurement line.
Essential is the filtering operation that allows obtaining a measurement of the surface quality only, deprived of the effects that the geometry errors of piece have on the measured profile.
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