Micrometer Inside 50–1000 mm Tube with Extension Rods

The Micrometer Inside (I/S) 50–1000 mm is a precision inside micrometer designed for measuring internal diameters of pipes, bores, and cylinders. This tube-type micrometer includes a comprehensive set of extension rods (13, 25, 50, 2×100, 150, 200, 300 mm) that allow you to adjust the measuring range across a wide span of bore sizes with plain measuring faces for accurate readings. Ideal for engineers, machinists, and maintenance technicians who need reliable bore measurement capability on-site or in the workshop.