Professional surface roughness spicement set 27pcs

Professional surface roughness spicement set contains 27 roughness samples and serves for visual comparison of the surface roughness for samples of turning, planing, face and cylindrical milling, face and cylindrical grinding, polishing.
Roughness samples are a rather crude control tool. For more accurate control, it is recommended to use profilometers.

The ОШУ-27 surface roughness control kit undergoes metrological control in the ISO 17025 accredited metrological laboratory MICROTECH