Description
(Aluminum Multi-hole reference standard with certificate. Contains 2 rows of 29 hole sizes. The first row has no flaws or side drilled holes. The second row includes side drilled holes. Hole Sizes: 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″…