Mitutoyo 293-344 Coolant Proof LCD Micrometer, Ratchet Thimble, 0-1"/0-25.4mm Range, 0.00005"/0.001mm Graduation, +/-0.00005" Accuracy, Without SPC Digital, single-value readout LCD displays in inch and metric units for readability Automatic off function helps preserve battery life Ratchet thimble mechanism helps provide uniform pressure for precise, repeatable measurements Rated IP65 for resistance to penetration by dust and liquid up to the force of a low-pressure water jet Carbide facing on spindle and anvil provides wear resistance