This part of BS 2634 specifies the characteristics of roughness
comparison specimens of spark-eroded, shot-blasted, grit-blasted and
polished surfaces. These are intended for tactile and visual comparison
with workpiece surfaces of similar lay that have been produced by
similar manufacturing methods.
BS 2634-2:2010 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