eBay

36pcs/set gage block Grade AS-1 set, inch sizes with NIST equivalent certs, deviation micro-inch 0.000001 inch. Include:

2 blocks: 0.05", 0.10"

9 blocks: 0.1001 thru 0.1009" by step 0.0001"

9 blocks: 0.101 thru 0.109" by step 0.001"

9 blocks: 0.110 thru 0.190" by step 0.01"

4 blocks: 0.2, 0.3, 0.4, 0.5"

3 blocks: 1.000, 2.000, 4.000

Tolerance with 8 millionth of inch, 0.000001"

Fitted in strong and deluxe indexed wooden box.