Tri-Blocks, 3in. L, 2in. W, 1in. H, 23, PR, Suburban, Mfr#: B-123-H23-M

These Suburban B-123-H23-M Tri-Blocks are the perfect tool for calibrating your equipment. With a wide range of sizes, you can use them to check your measurements at various stages. Featuring both long and short form certifications, these tri-blocks are suitable for quality control purposes. Made of steel, they have an accuracy of +0.0001 in/+0.0003 in over their length and width respectively. The included squareness certification ensures that the blocks are within 0.0001 in per 1 inch over their length, while the parallelism certification ensures that they are within 200 microns over their width. These Tri Block Pairs by Suburban will give you precise measurements every time.