OTC 3660 Phototach Non-Contact Tachometer.
Infrared technology makes phototach accurate, convenient, and easy to use.
Infrared beam not affected by ambient light.
Non-contact design results in no torque loss for true precision.
The phototach is equipped with a laser pointer for accurate targeting. Reflective tape placed on a revolving object can be measured at distances from 2" to 12". It features a wide measuring range and high resolution, 2.5 to 99,999 RPM with a large 5-digit display, autoranging, min/max memory storage, and low battery indicator.
The phototach is the ideal tool for applications where electronic RPM pickup is not available.
Gears, motors, engines, fans;
Pulleys, grinding wheels;
Drills, saws, hones.