Take measurements with ease and speed using the Digi-Max™ digital slide caliper. The LCD display immediately indicates the exact measurement taken. A push button allows selection of metric or english scale, and a self-zeroing feature guarantees the right measurement, with accuracy of ± 0.1mm (.004"). On/off buttons preserve battery life. Molded of a rigid, non-conductive, corrosive resistant plastic, the Digi-Max™ caliper measures from 0 to 150mm (0" to 6") to three decimal places. Parallel jaws are 40mm (1.58") deep. Overall length is 224mm (8 13/16"), weight is 45gm (0.1 lb.). A long life battery is included and easily accessible for replacement.