Characteristics of specimens intended for tactile and visual comparison with workpiece surfaces of similar lay, produced by similar manufacturing methods.
BS 2634-2:1987 history
2010BS 2634-2:2010 Roughness comparison specimens. Part 2: Specification for spark-eroded, shot?blasted, grit-blasted and polished specimens
1987BS 2634-2:1987 Roughness comparison specimens. Specification for spark-eroded, shot-blasted, grit-blasted, and polished specimens