12 HOLES REFERENCE STANDARD (Inch Version) 12 HOLE REFERENCE STANDARD WITH A .020" MID WALL NOTCH, .030" CORNER NOTCH, .050" CORNER NOTCH, .010" ,.020", .040: .050" SURFACE NOTCH DIMENSION: 6" (L) x 2.5" (W) x 0.25" (T) Holes SIZE: Ø0.12", 0.22", 0.25", 0.28", 0.31", 0.34", 0.38", 0.43", 0.5", 0.56", 0.63" and 0.75" Surface Notches: Qty 4 @ 0.01", 0.02", 0.04" and 0.05" deep x 1" long Hole Notch Configurations: (1)0.03" x 0.03" (45°) corner notch @ 0.004" wide in each hole (Qty 12) (1) 0.02" full-bore (thru) notch @0.004" wide in each hole - (Qty 12) (1) Full-bore (thru) notch @ 0.02" deep x 0.004" wide and (1) 0.05" x 0.05" (45°) corner notch @ 0.004" wide in each hole, 180° apart (Qty 24) (1) Mid-bore notch @ 0.03" deep x 0.004" wide x 0.06" long in each hole - (Qty 12). Notch Width (All): 0.004"mm (± .025) NOTE: For special alloy request by mail.

12 HOLES REFERENCE STANDARD (Metric Version) 12 HOLE REFERENCE STANDARD WITH A 0.5mm MID WALL NOTCH, 0.76mm CORNER NOTCH, 1.27mm CORNER NOTCH, 0.25mm , 0.5mm, 1mm, 1.25mm SURFACE NOTCH Block Sizes: 152mm (L) x 63mm (W) x 6.35mm (T) Holes SIZE: Ø4.8, 5.56, 6.35, 7.14, 7.94, 8.7, 9.53, 11, 12.7, 14.3, 15.9 and 19mm Surface Notches: Qty 4 @ 0.25mm, 0.5mm, and 1mm and 1.27mm deep x 25.4 mm long Hole Notch Configurations: (1)0.76mm X 0.76mm(45°) corner notch @ 0.1mm wide in each hole (Qty 12) (1) 0.5mm full-bore (thru) notch @0.1mm wide in each hole - (Qty 12) (1) Full-bore (thru) notch @ 0.5mm deep x 0.1mm wide and (1) 1.27mm X 1.27mm (45°) corner notch @ 0.1mm wide in each hole, 180° apart (Qty 24) (1) Mid-bore notch @ 0.76mm deep x 0.1mm wide x 1.5mm long in each hole - (Qty 12). Notch Width (All): 0.1mm (± .025)