The hand-LED strobe model of a4950 by Adash is suitable for a wide range of applications in machine maintenance and maintenance. The stroboscope causes seem to stop periodic movements and rotations of parts of a machine, which allows a precise visualization. The stroboscope can determine the speed of a rotating shaft model A4950 and allowed measurements synchronized without having to reflective markings must be placed on the shaft. The device can be used also as a speedometer, by an external tacho probe is connected. The strobe model A4950 has three ultra-bright LEDs with optical system as the source of the flash light. The intuitive and simple operation of the device via the integrated 3-button keypad and the legible color graphic display. The power is supplied by two standard or Rechargeable AA batteries.