Surface roughness gauge and method

Details Surface roughness gauge and method Surface roughness gauge and method

H - Electricity

02

G

33/32

H02G 1/12 (2006.01) G01B 9/00 (2006.01) G01B 11/30 (2006.01)

Patent

CA 1156827

Surface Roughness Gauge and Method Abstract A compact gauge for effectively measuring the surface roughness of an article in any direction of lay includes: first means for directing a light beam upon a surface of the article, second means for providing a first signal proportional to the specular light reflected from the surface, the first and second means defining a common plane, third means for providing a second signal proportional to the diffused light reflected from the surface in the common plane, and fourth means for providing a third signal proportional to the diffused light reflected from the surface to the side of the common plane. The subject gauge includes a sensor head that can be miniaturized and electrical circuit means that can process the signals and provide a direct reading in micrometers independent of the reflectivity level of the surface.

386564

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