INSIZE 3221-63 Tubular Inside Micrometer 50-63mm

The INSIZE 3221-63 tubular inside micrometer covers 50-63mm by fitting extension rods onto a single micrometer head, so one instrument reaches a wide range of bore and internal diameters. Its micrometer head has a 13mm travel, and needs no extension rods over this range. INSIZE gives the series a 0.01mm graduation and rates accuracy by the formula (6+L/50)μm, where L is the maximum measuring length; that works out to about 7.26μm at 63mm. Optional INSIZE accessories include a setting ring (code 6312), gauge block accessory (code 6881), cylinder gauge block (code 4001) and caliper/height gauge checker (code 6884).