Surftest (Surface Roughness Testers)
In typical surface roughness testers, the taper angle of the stylus end is 60˚ unless otherwise specified. Static Measuring Force Measuring force at the mean position of a stylus: 0.75mN ... The following table lists the relationship between the roughness profile cutoff value λc, stylus tip radius rtip, and cutoff ratio λc/λs.
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