Tachometer TAC 1600 Professional digital tachometer for measuring RPM and for measuring lenghts of for instance cables, ropes etc. Contact and non-contact measurements. Length and cirumference through contact measuring. - Display: 5-figures 18mm LCD display - Measuring reach: non-contact: 2,5 -99999 rpm - Measuring by contact: 0,5 - 19999 rpm - Measuring reach contact measuring circumference speed: 0,05 - 1999,9 m/min. - Accuracy: +/- 0,05% + 1 digit - Power: 4 aa 1,5V penlightbatteries - 6V 65mA, via adapter - Size: 210 x 74 x 37mm