12 HOLES WITH CORNER AND SURFACE NOTCH REFERENCE STANDARD (Inch Version) COPPER

Contains 12 hole sizes; 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8" and 3/4" inch diameters.( .030" X .030" CORNER NOTCH and 3 SURFACE NOTCHES .010", .020", .040" DEEP x .750" LONG.)

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

Holes SIZE: Ø3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8" and 3/4"

Surface Notches: Qty 4 @ 0.010", 0.020", 0.040" deep x 0.75 long" X 0.004" wide

Hole Notch Configurations: 0.030" X 0.030" (45°) corner notch @ 0.004" wide in each hole 

MATERIAL: COPPER.

NOTE:  For special alloy request by mail.