FOWLER 74-880-001-0, 0-1IN / 0-25MM ELECTRONIC MICROMETER Great for garage and shop environments. Accuracy: 0.00015/0.003mm. Resolution: 0.00005/0.001mm. Super large LCD display, 14mm height. IP54 protected against fluid and dust. Anti-corrosive ratchet thimble (anodized aluminum). Additional features include spindle lock, Carbide tipped anvil and spindle, SPC Output and fitted case. . Measures disc brakes 16/400mm on brake drums. Includes set of clamps; 4 sets of set screws; 1 Allen wrench; 1 set of 3 3⁄4 contact points; 1 set of 3⁄4 cone contact points & 1 set of 3⁄4 flat contact points in plastic tube. 16/400mm set also includes 1 pair of 2 extensions. When measuring brake drums only, add 8 to measurement—allows for long cone & jaw widths. For use with 6 & 8 calipers 74-880-001-0