Mitutoyo 573-721 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 components Narrow jaw tips access small grooves and indentations for obtaining difficult-to-reach measurements Four-way measurement capability for multiple applications: outside dimension (OD), inside dimension (ID), depth, and step Function control buttons on caliper face for ease of access: Origin-set, Zero-setting, Power On/Off, Inch/Metric, Data Output Statistical process control (SPC) output transmits results to a Mitutoyo miniprocessor or computer