11 BOLT HOLES WITH CORNER AND SURFACE NOTCH CALIBRATION REFERENCE STANDARD (Inch Version) COPPER

11 hole Reference Standard. Contains 11 hole sizes; 7/64", 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4" and 1.0" inch diameters.( 0.030" X 0.030" Corner EDM Notch and 3 Surface EDM Notches at .010", .020", .040" DEEP x .750" LONG.) Includes Test Report and Certificate of Conformance.

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

Holes SIZE: Ø7/64", 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4" and 1.0"

Surface Notches: Qty 3 @ 0.01", 0.02" and 0.04" deep x 0.75" long X 0.006" wide

Hole Notch Configurations: 

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

MATERIAL: COPPER.

NOTE:  For special alloy request by mail.