Extech 461825 Tachometer Stroboscope Combination Photo.

Combination Photo Tachometer/Stroboscope
Perform Tachometer RPM measurement (5 to 99,999 rpm) and stroboscopic speed and motion analysis (100 to 100,000 fpm/rpm). This product's unique display reverses character direction depending on which measurement mode you are using.

Additional Features
The tachometer's memory stores its last/max/min readings for recall. The strobe features course and fine flash rate adjustments in three ranges.

Reflective Tape for Photo Tachometers
Reflective Tape For Photo Tachometers (461937) is made for use with any brand Photo Tachometer. Place a piece of reflective tape on the object to be measured and point the tachometer’s integral light beam at it. There are ten reflective tape strips, and each strip measures 23 x 0.25 inches (584 x 6mm).

Digital StroboTach 115VAC/60Hz
The Digital StroboTach 115VAC/60Hz (461830) allows you to freeze motion and analyze rotating objects without contact. It checks and analyzes motion and speed by simply aiming and synchronizing its flash rate (FPM) with a rotating object — ideal for measuring the speed of moving gears, fans, pumps, motors, and other equipment used in general maintenance, production, quality control, or laboratories. Measurements are read on the four-digit LED display. High accuracy is maintained over a wide, dynamic range via exclusive microcomputer LSI circuit and crystal control time-base. It has a Flash/Speed Rate of 100 to 10,000 FPM/RPM with duty cycles from five to 30 minutes and one second sampling rate. It has a tripod mount for stationary use and operates on 115VAC/60Hz, coming complete with a six-foot (1.9m) power cord.