Mitutoyo 368 173 (0.005mm) 3 Point Internal Micrometer 87 100mm

Provides highly accurate three-point measurement of bore diameters Titanium coated measuring pins provide durability and impact resistance, and the design allows measurement right to the bottom of blind holes (within max measuring depth limit) Measuring pins are spaced at 120° for increased accuracy of measurement compared to traditional two-point devices Turning the ratchet automatically centres the micrometre in the bore, which makes measurement fast and easy to perform without loss of precision Steel setting rings are available (optional) for accurately setting the micrometre at points within the measuring range