Internal Digital Caliper Gauge Range 0.8 in to 1.6 in 20 to 40 mm Resolution 0.0002 in/0.005mm Accuracy +/-0.0012 in Dimension Type Inch/Metric Jaw Actuation Type Lever Jaw Depth 3.150 in Maximum Measurement - Inch 1.6 in Maximum Measurement - mm 40 mm Measurements Inside Minimum Measurement - Inch 0.8 in Minimum Measurement - mm 20 mm Operation Type Digital Battery Size CR2032 Display Type 170 Degree Rotating Display with Digit and Analog Reading