Best Surface Roughness Tester

What is surface roughness tester used for?

A roughness tester is used to quickly and accurately determine the surface texture or surface roughness of a material. A roughness tester shows the measured roughness depth (Rz) as well as the mean roughness value (Ra) in micrometers or microns (µm).

https://www.penntoolco.com/mahr-marsurf-ps-10-mobile-roughness-measuring-instrument-2-m-6910230/

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