12 BOLT HOLES WITH CORNER AND MID WALL NOTCH REFERENCE STANDARD (Inch Version) COPPER

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", 3/4" inch diameters. (0.030" x 0.030" Corner and 0.020" x 0.020" Midwall EDM Notches in each Hole. Includes Test Report and Certificate of Conformance.

DIMENSION: 6" (L) x 2.5" (W) x 0.25" (T)

Holes SIZE: Ø1/8", 5/32", 3/16", 7/32" 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", and 3/4"

Hole Notch Configurations: 

• 0.03" x 0.03" (45°) corner notch @ 0.005" wide in each hole (Qty 12)

• 0.02" (L) X 0.02" (D) MID-WALL NOTCH @0.005" wide in each hole - (Qty 12)

MATERIAL: COPPER.

NOTE:  For special alloy request by mail.