Precise measurement: Measurement range: 0 - 6''/ 0 - 150mm; Resolution: 0.01/ 0.1mm; Accuracy: 0.2mm/0.01. Perfect and accurate caliper measuring tool for household/DIY measurement. Please choose stainless steel digital caliper for more accurate measuring 4 measuring modes: This digital caliper can be used to Measure inside and outside diameter, depth and step with two sets of jaws and a probe. Powered by battery, comes with a pre-installed battery and a spare battery Inch/mm conversion: One button quick switch between two units: inch and millimeter, definitely save your time. The buttons are made of rugged plastic carbon fiber composites, durable and portable Zero setting function: The smart design allows you to set zero with an easy touch of a button and start a new measurement at any point of the scale, ideal for differential measuring Large LCD screen & auto off: The large and easy-to-read LCD display helps you get precise results quickly and easily, auto shutdown for saving battery after 5 minutes if without operation