Extech 461825  

Extech 461825: Combination Photo Tachometer/Stroboscope

2-in-1 Meter with stroboscope to analyze rotating objects and Tachometer to measure rpms

Perform Tachometer RPM measurement, Stroboscopic speed and motion analysis with the 461825 Combination Photo Tachometer and Stroboscope. Unique display reverses character direction depending on which measurement mode you are using. Tachometer memory stores last, max and min readings for recall. Strobe features course and fine flash rate adjustments in 3 ranges. Complete with 4 AA batteries, reflective tape, and carrying case.