Description
12 Hole Calibration Standard, Hole Sizes; 1/8, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8 and 3/4 inch diameters. .020 x .020 x .005″ ± .002″ Corner and .020″ x .005″ ± .002″ Thru EDM Notches in each Hole, .010, .020, .040″ x .750″ Long Surface EDM Notches. Material: 4340 Steel. Includes Test Report and Certificate of Conformance