The SHIMPO Series ST-1000 is a Stroboscope-Tachometer operating with energy-efficient LED flash technology. The ST-1000 velocity analyzing and measuring device is ideal for rotational machine inspection. The stroboscope is capable of flashing the light in a synchronous frequency to the operating machinery, creating the illusion of viewing stopped or slowed images. Utilizing this phenomenon of slowing or stopping the motion with the adjusted rate of the ST-1000s flashing LED lights, machine parts and processes may be inspected for defects. Plus, the rotational speed of the machinery and systems may be recorded for further performance analysis. The ST-1000 is the ideal choice for inspecting rotors, meshing gears, vibration diagnostic equipment, textile equipment, power tools, speaker acoustical analysis, printing production lines and many more. Specifications include... 60-40,000 Flash Rate Per Minute (RPM) 5-digit Display with Backlight Weight: approximately 7 oz. Power Source: 4 AA Batteries Shimpo ST-1000 Stroboscope Brochure