Mitutoyo 500-752-10 Digital Calipers, Battery Powered, Inch/Metric, for Inside, Outside, Depth and Step Measurements, Stainless Steel, 0"/0mm-6"/150mm Range, +/-0.001"/0.01mm Accuracy, 0.0005"/0.01mm Resolution, Meets IP67 Specifications Hardened stainless steel construction for protection of caliper and ABSOLUTE linear encoder technology components Four-way measurement capability for multiple applications: outside diameter (OD), inside diameter (ID), depth, and step Digital, single-value readout LCD display in inch and metric units for readability Function control buttons on caliper face for ease of access: Origin, On/Off, and Zero/ABS (Absolute Scale) IP67-certified for protection against dust and temporary submersion in water