Digital inside micrometer.Design: With 3-line, self-centring measuring head, measuring probe from 12 mm carbide reinforced. From 40 mm measuring head made of aluminium to save weight, digit height of LCD display 8.5 mm, data output variable with wireless connection (with optional transmitter module), RS 232, Digimatic and USB. Supplied with basic unit, measuring head and battery CR 2032, 3 V, in case.Functions: With mm/inch switching, automatic switching by means of turning the drum, key lock set for zero position, re-zeroing after switching deleted (absolute system), reset (zeroing) possible at each position, pre-set function (setting a numerical value), ABS (switching from relative to absolute measurement).