Amazon.com: Handheld Stroboscope DT100B Rechargeable LED Flash Strobe Tachometer Non Contact Rotational Digital Speed Analyzer 1500LX 60 to 999999 RPM Speedometer 7.4V : Industrial & Scientific
Video tachometer by Dmitriy Kharutskiy
LED Stroboscope Rechargeable Handheld Stroboscope, LED Flash Strobe Tachometer with 60-99999FPM, Rechargeable LED Flash Strobe Speedometer Color LCD Display for HVAC Motor Printing Spinning-DT100B: Amazon.com: Industrial & Scientific