Calibrated caliper with a measurement range of 0 to 6" (0 to 150mm), resolution of 0.0005" (0.01mm), and an accuracy of + or - 0.001", for measuring inner/outer diameters, depth, and step of items in harsh workshop conditions | LCD screen displays in inches and metric units | Thumb roller and Absolute electrostatic capacitance type linear encoder for accurate measurements | Functions include absolute measurement, incremental measurement, scale contamination alert, and low-voltage alert | Includes a Mitutoyo Certificate of Calibration that the tool has been calibrated, and meets the International Organization for Standardization/International Electrotechnical Commission (ISO/IEC) 17025 International Standard for testing and calibration laboratories