Mrk engineers produces a digital stroboscope, model dt-2239 a. This digital stroboscope is a microprocessor circuit design, high accuracy, digital readout, and light duty stroboscope/tachometer. The digital stroboscope from mrk engineers is suitable for checking and measuring the speed of moving gears, fans, centrifuges, pumps, motors and other equipment, used in general industrial maintenance, production, quality control laboratories, as well as in schools and colleges for displaying strobe action. It has 4-digit display with stroboscopic accuracy of &177;1 digit up to 5,000 rpm and &177;0.05% for above 5,000 rpm. The digital stroboscope unit contains automatic range select circuit. This digital stroboscope from mrk engineers uses a customised one-chip microcomputer lsi circuit and crystal control time base, which results in extraordinary accuracy over a wide, dynamic range. The digital stroboscope operates at 230 v ac, 50 hz, with power consumption of 30 w. A flash tube of xenor lamp having flash duration of 60 to 1000 microseconds is included in the digital stroboscope. The xenor white 6,500&176; k are integrated inside the digital stroboscope, which will reflect with the use of plastic mirror type reflector.