Precise 36 Piece Steel Rectangular Gage Block Set

Grade AS-1 (3) tolerances = +8, -4 millionths.

Each set includes standard sizes found in more expensive sets. 

Each block is steel and hardened to 65RC, stress relieved, lapped to accurate size, parallelism & flatness, then carefully inspected and marked for size designed to meet close tolerance.

9 Blocks .1001″ thru .1009″ step of .0001″
9 Blocks .101″ thru .109″ step of .001″
9 Blocks .110″ thru .190″ step .01″
5 Blocks .100″ thru .500″ step of .1″
3 Blocks 1″, 2″, 4″
1 Block .050″