Precision 1-2-3 Blocks For Setup, Custom Fixtures And More

Valuable assets to tool rooms and inspection labs, Precision 1-2-3 blocks are extremely useful for layout and set up work. Our 1-2-3 Blocks (1 inch x 2 inch x 3 inch) are case hardened on all sides and ground parallel, flat and square within 0.0003 inch. Set includes 2 matched blocks, each with 5 tapped holes (3/8-16) and 18 untapped holes (11/32”).