<p><span style="font-size: 16pf; color: #000000;">A&nbsp;roughness tester&nbsp;is&nbsp;used&nbsp;to quickly and accurately determine the&nbsp;surface&nbsp;texture or&nbsp;surface roughness of&nbsp;a material. A&nbsp;roughness tester&nbsp;shows the measured&nbsp;roughness&nbsp;depth (Rz) as well as the mean&nbsp;roughness value (Ra) in micrometers or microns (µm).We supply surface roughness tester with calibration certificate.</span></p>