INSIZE Coolant Proof Electronic Micrometer Features include... 3-4" / 75-100mm Measuring Range 0.00005” / 0.001mm Resolution Accuracy: +0.00015" IP65 dust/waterproof Buttons: power on/off, inch/mm conversion, ABS/INC measurement Auto power off SR44 battery, includes one spare battery Supplied with Spherical Anvil Cap Includes Setting Standard NO SPC Output Supplied in fitted storage case