LASER PHOTO/CONTACT TACHOMETER Model : DT-1236L * Patented, the best tachometer in the world. * Long detecting distance for photo Tech. up to 2 meters. * Photo & contact tachometer in one meter. * Fast sampling time for low contact RPM measurement, automatic reverse display. * Photo Tech. : 10 to 99,999 RPM Contact Tech. : 0.5 to 19,999 RPM. Surface speed : m/min, ft/min. * Size : 215 x 67 x 38 mm, patented.