Surface roughness, often simply called roughness, is a component of surface finish (surface texture). It is quantified by the deviation of the normal vector direction of the real surface from its ideal form. If these deviations are large, the surface is rough; if they are small, the surface is smoot

Roundness is a property of a surface of revolution where all points on the surface are equidistant from the axis. The roundness of any profile can only be specified if the same center is found for the measurement. Diameter and roundness are measured by different methods and instruments. For diameter

Roundness measurementRoundness is defined as the condition of a surface of revolution. In the case of cylinders and cones, all points of the surface intersect any plane perpendicular to a common axis.Equipment for measuring roundness 1) Diameter gauge. 2) Circumferential conferring gauge=> the shaf

Roundness measurement includes rotary axis method, three-point method, two-point method, projection method and coordinate method. When measuring, make the workpiece to be tested rotate one circle in the V-shaped block, and read the maximum indication value and the minimum indication value from the micrometer.