• Can be used as a contact as well as a non-contact tachometer
• Four styles of contact adapter tips clip easily to the top of the phototach
• Infrared technology makes the phototach accurate, convenient, and easy-to-use
• Infrared beam not affected by ambient light
• Non-contact design results in (zero) torque loss for true precision
• 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 20"
• Wide measuring range and high resolution, 2.5 to 99,999 rpm with a large 5-digit display, auto ranging, min/max memory storage, and low-battery indicator

No. 3665 - Phototach contact/non-contact