Ultra Precision 123 1-2-3 Block 23 Holes

描述

This ultra precision 123 1-2-3 block with 23 holes has a squareness of 0.0003 inch and a grad of +/- 0.0005 inch. The flatness is 0.0002 inch and the hardness is around 56-60 HRC. It is ground and hardened on all sides.