Indicator Dial Range 0 in to 0.4 in Graduations 0.0001 in Accuracy +/-0.0001 in Long Form Calibration Certificate No AGD Number AGD 4 Back Type Lug-On-Center Dial Color White Dial Reading 0-20 Dial Size 3.63 in Dimension Type Inch Maximum Measurement - Inch 0.4 in Minimum Measurement - Inch 0 in Number of Indicators 1 Operation Type Plunger Range per Revolution 0.02 in Reading Continuous Bearing Type Jeweled Bezel Lock Yes Contact Point Dia 0.25 in Contact Point Shape Radius