Backlit Digital Indicator, Series Series 543, Resolution 0.001 mm, 0.00005 in, Accuracy +/-0.0001 in, Range 0 in to 0.5 in, Long Form Calibration Certificate Yes, Features Absolute Encoder Scale, Red/Green Go/No Go Display, Analog Display, Max/Min/TIR/Hold, Selectable Resolutions, External Power Supply, On/Off, Zero-Set, Preset, Change Counting Direction, Inch/Millimeter Functions and SPC Output Port with Dust Cap, Includes External Power Supply