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These precision 4-piece combination squares are perfect for project/part layout, machine setup, determining level/plumb, or as a depth, height, or marking gauge. This type of square is widely used by metal and woodworkers alike. They are manufactured in accordance with the derived tolerances from FEDERAL SPECIFICATION NO. GGG-S-656c and guaranteed to be square to within 0.005" (five thousandths of an inch) over the length of the 12" blade.
Blade: Has a hardened and tempered no-glare satin chrome-finished steel blade. Blade markings are precision laser-etched for easy readability. Graduations are in 1/64ths, 1/32nds, .5mm and mms. The blade measures 12” x 1” x 0.080”.
Square head: Precision machined and lapped cast iron head with a black baked-on finish contains an integrated spirit level and hardened steel scribe. The size is 5” x 3-5/8” x ¾”.
Protractor head: Non-reversable head (can be used on one side only) and rotates 90 degrees in both directions. Has 2 locking screws and an integrated level. Size is 7” x 3-1/4” x 7/8”
Center head: Size is 3-3/4” x 3-1/4” x ¾”.
Complete set comes packaged in a plastic case with foam cutouts.
WARNING: Cancer and Reproductive Harm - 
