These digital readout kits are designed to be attached to a wide variety of woodworking, metal working and other machinery allowing conversion to digital readout. Going digital ensures precise and highly repeatable machine adjustments. These units can be attached to milling machines, metal lathes, shapers, router tables, planers, drill presses, and much more. Features: 1) Accuracy +/- .001” per 6" or .01 mm per 150 mm. 2) Can set zero at any point along the sensor 3) Resolution: 0.0005” / 0.01 mm 4) Stainless steel horizontal sensor beam that can be cut to any desired length. 5) Unlimited reading speed with no display lag. 6) Manual power on/off 7) Repeatability .0005” or .01 mm. 8) Range: 0-6” or 150 mm. 9) Power: LR44 Alkaline battery. Comes with extra battery. 10 Packaged in wooden box