INSIZE 3128-150 Digital Three-Point Internal Micrometer 100-150 mm

For the 100-150 mm/3.94-5.91 in range, the INSIZE 3128-150 digital three-point internal micrometer holds a 6 µm accuracy under DIN863-4, with a resolution of 0.001 mm/0.00005 in. INSIZE describes it as IP54 dust/waterproof, fitted with carbide measuring faces, a ratchet stop, and data-output buttons alongside on/off, set and mm/inch controls, with automatic power-off. A 150 mm extension rod and an included Ø100 mm setting ring come with it, along with a manufacturer inspection certificate.