Accurate measurement: measuring range: 0-6 inches / 0-150 mm;Precision: ±0.01mm / 0.0005 ". Complete and accurate caliper measuring tool for home/DIY measurements. Choose YKLSXKC stainless steel digital calipers for more accurate measurement | Inch/mm conversion: One button quick switch between two units: inch and millimeter, definitely save your time. high temperature quenching of external measuring claw to provide stronger wear resistance,higher strength, more durable | Return to zero setting function: Smart design allows you to reset to zero easily with a single button and start a new measurement at any point on the scale, ideal for differential measurements | 4 measuring modes: This digital caliper can be used to measure inside diameter, outside diameter, depth and step through two sets of jaws and one probe.Battery-powered, comes with a pre-loaded battery and a spare LR44 battery | Large LCD display with auto shut-off: The large, easy-to-read LCD display helps get accurate results quickly and easily, and automatically shuts off after 5 minutes to conserve battery if not in operation