Item Digital Height Gauge Counter Type Electronic Digital Mechanism Electro-Motorized Construction Aluminum Display LCD Resolution 0.000001 in/0.0001 mm 0.00001 in/0.001 mm 0.0001 in/0.01 mm 0.001 in/0.1 mm Range 0 in to 38 in/0 to 972 mm Accuracy +/-(1.1+0.6L/600) micron Base Cast iron Battery Rechargeable Battery Pack Features RS-232C USB Data Output Basic Statistical Functions One-Key Operation Pneumatic Full-Semi-Floating System