Phototach non-contact only

• No. 3665 phototach 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, autoranging, min/max memory storage, and low-battery indicator. No. 3660 � Phototach non-contact only.