Rcbs' electronic digital caliper switches from inches to millimeters with the touch of a button.It ranges from 0-6-inch/0-150mm with +/- 0.001-inch/0.02mm accuracy.Resolution: 0.0005-inch/0.01mm.The caliper features large, easy to read numbers which helps reduces error on guessing.It also measures internal, external, depth and step dimensions.Jaw depth measures 1-1/2-inch outside, 5/8-inch inside.Lock holds slide in position for measuring constants.Battery included.Low battery indicator.Fitted plastic storage case.Type: Electric Digital CaliperCaliber: Multi-CaliberSize: 0-6"Quantity: 1Function: MeasureMaterial: Stainless SteelMedia Type: Brass Shell