SURFACE ROUGHNESS GAUGES
The surface roughness gauge set is a reliable and easy way for checking, identifying and specifying the degree of roughness of machined parts. The set contains thirty steel specimens of six machining methods: flat-lapping reaming grinding horizontal milling vertical milling turning Each specimen measures 7/8″ length x 3/8″ width and are calibrated in micro inch and micro meters. A chart giving metric and imperial equivalents for each surface roughness measurement is included.