Mitutoyo Spherical Face Micrometer w/ SPC Output Spherical Face on Anvil, Flat Spindle Designed to measure the wall thickness of various tubing, this micrometer has a spherical face on the Anvil while the Spindle face is flat. Features include... 1-2" / 25.4-50.8mm Measuring Range 0.00005" / 0.001mm Resolution 0.0001" Accuracy IP65 Rated Dust / Water Protection Functions include... Origin-set, Zero-setting, Data hold, Data output, inch/mm conversion Alarm: Low voltage, Counting value composition error