Digital Caliper IP 54 Waterproof 150 Mm 6 Inch 200 MM 300MM Caliper Metal Vernier Caliper Measurement

1.mm/inch conversion at any position,zero setting at any position 2.Can measuring inner diameter,outer diameter,depth and step 3.Low voltage warning by flashing display 4. zinc alloy display case 5.Manual power on/off or auto power off