3665 OTC Tools Phototach Contact/Non-Contact
OTC 3665 Phototach (Contact / Non-Contact) 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, and the 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.