The Precise - 87, 1 Gauge Block Set comes in sets of blocks, each of 1 inch along with additional wear blocks. Each gauge block in the 87, 1 Gauge Block Set is a block of metal with 2 opposing faces designed to be precise, flat and parallel. Hardened alloy steel is used to make standard grade blocks that are hardened, wear and tear-resistant, and corrosion-resistant. The cutting of the blocks to their specified size is done by grinding, followed by lapping. The Block Set is ideal for use by machinists and toolmakers.
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