81 Pc Rectangular Steel Gage Block Set Grade B Space Block Harden Gauges .000005
- 9 Blocks -- .1001" thru .1009" step of .0001".
- 49 Blocks -- .101" thru .149" step of .001".
- Wooden case dimension: 7-1/2''L x 12''W x 2''H.
- 19 Blocks -- .050" thru .950" step of .050".
- 4 Blocks -- 1.000 thru 4.000 step of 1.000".
- Grade B Shop Accuracy to +/- 0.0000050" (1" & Less).