Phototach Tachometer - Contact / Noncontact - OTC Tools and Equipment

The OTC 3665 Phototach Tachometer is a professional-grade tool engineered for precision RPM measurement in diverse automotive and industrial environments. This versatile device offers both contact and non-contact (photo tac) operational modes, providing technicians and mechanics with the flexibility needed for various applications. Its robust construction ensures reliable performance and durability in demanding conditions.

Key Features

• Dual Measurement Capability: Seamlessly switch between non-contact (photo tac) infrared measurement and direct contact measurement using the included adapter tips for maximum versatility.
• Accurate Non-Contact Measurement: Utilizes infrared technology and a built-in laser pointer for precise targeting, allowing for accurate RPM readings from 2 to 20 inches away, even in varying light conditions. The non-contact design eliminates torque loss for true precision and reduces wear on equipment.
• Wide Measuring Range: Capable of measuring rotational speeds from 2.5 to 99,999 RPM, accommodating a broad spectrum of machinery and engine types.
• Intuitive Display and Memory: Features a large 5-digit LCD with autoranging for quick readings and includes min./max. memory storage to track critical measurements.
• Professional-Grade Accessories: Comes complete with four styles of clip-on contact adapter tips for secure contact measurements and reflective tape for non-contact applications.

Applications

The OTC Phototach Tachometer 3665 is ideally suited for:

• Automotive diagnostics and repair, ensuring accurate RPM assessment for engine tuning and troubleshooting.
• Industrial maintenance, equipment condition monitoring, and predictive maintenance programs.
• Machine shop operations requiring precise rotational speed verification and tool calibration.
• Situations where physical contact with rotating components is impractical or unsafe.

Specifications

• Measuring Range: 2.5 to 99,999 RPM
• Display: Large 5-digit LCD with Autoranging
• Dimensions: 11 x 6.1 x 3.2 inches
• Weight: 2.05 lbs
• Power Supply: 9V battery