Surface roughness gauge and method

摘要: A compact gauge (10) for effectively measuring the surface roughness of an article (14) in any direction lay includes: first means (30) directing a light beam (32) upon (12) (14), second (34) providing signal proportional to specular reflected from (12), and (30,34) defining common plane (40), third (58) diffused fourth (61) side (40). The subject includes sensor head (28) that can be miniaturized electrical circuit (66,104) process signals provide direct reading micrometers independent reflectivity level surface.