Digital Caliper Gauge 10-30mm/0.4"-1.2" Description Electronic inside caliper gauges are suited to measuring bores, internal grooves and other hard to reach internal dimensions Features • Digital and analogue display on LCD • Function include Power, Absolute & Incremental • Metric/Imperial conversion • Remembers the data of Max. and Min or hold data • Direct RS232 Output (Uses cable 40-401) • Uses CR2032 Battery. Auto power off • Accuracy 0.03mm • Tolerance set