Tri-Blocks, 6in. L, 4in. W, 2in. H, 23, Suburban, Mfr#: B-246-H23-M

Made from durable steel, the Suburban B-246-H23-M Tri-Blocks are great for measuring length, width and height. The 6 in. long tri-blocks have a width of 4 in. and height of 2 in.. This set comes with both long form and short form certificates that verify their accuracy. The size tolerance is +/-0.0001 in./+/-0.0004 in., while the material has a +0.0001/300 micron squareness per 1 inch of length, +/- 0.0001 in./+/- 0.0004 in.. parallelism per inch of length and 300 micron hole style per 1 inch of length. If you need to measure your parts accurately, this Suburban B-246-H23M Tri Block Pair will definitely help.