36 Pcs 0.050-1.0″ Steel Spacer Block Set in Fitted Case Fit For Set-up Work
Description: Surface Finish:The measuring surface are ground and micro lapped to surface roughness of Ra 0.1. Individual block are marked with size. ID thread size is 1/4-28 on 0.101″ and above gage blocks, for size 0.050″ to 0.0625″ gage block it has a straight thru hole. Working surface hardness is 57-60 HRc. 4 screws for connecting space blocks and hex keys. Used for set-up work, setting sine bars, high build-up work and for machine work shops. .