Precision Measurement - Measurement Range: 0 - 6''/ 0 - 150mm; Resolution: 0.01''/ 0.1mm; Accuracy: 0.01''/ 0.1mm. 4 Measuring Modes - Vernier caliper can measure internal and external diameter, depth and step with two sets of jaws and a probe. Zero Setting Function - This digital caliper can be set Zero in any position on the caliper. Help to conveniently measure multiple parts of one object without repeat placing. Inch/MM Conversion - Easy to switch between inch and millimeter by pushing a unit conversion button. Perfect accurate caliper measuring tool for household and DIY measurements. Large LCD Screen Auto-Off - Easy and quick to get precise results, auto shutdown for saving battery after 5 minutes if without operation. Come with an LR44 button cell for the power supply. Specifications: color: as show Material: Carbon Fiber Composites Measuring Range: 0-150mm/ 0-6 inch Resolution: 0.1mm/ 0.01 inch Repeatability: 0.1mm/ 0.01 inch LCD display size: 40 x 15mm(approx.) Power: LR44 / SR44 1.5V Package Included: 1 x Electronic Digital Caliper