Extech Combination Contact Photo Tachometer – 461895

In stock

This tachometer features a photo measurement method which reflects visible light off from reflective tape attached to the rotating object. Also features a contact measurement.

Extech Combination Contact Photo Tachometer – 461895

Contact and non-contact RPM measurements using visible light, great for extremely high RPM


  • Make non-contact and contact rpm measurements of rotating objects
  • Characters on display will reverse direction depending on contact or photo mode
  • Features a cone tip, flat tip and wheel for surface speed measurements
  • The light measurement method is great for measuring rpm on any part of a rotating object
  • Use reflective marker on object to be measured and point the integral light beam for accurate readings updated every second
  • Non-contact measurements from 5 to 99,999rpm
  • 2 to 6 inches (50 to 150mm) measurement distance (depending on ambient light)
  • Built-in memory recalls last MAX/MIN value stored
  • Auto ranging with 0.05% accuracy
  • Large 5 digit LCD display is easy to read
  • Comes complete with:
    • 23” (0.6m) reflective tape
    • Four 1.5V AA batteries
    • Carrying case

A tachometer simply measures the rotational speed of a shaft, wheel, pulley or a motor. This is a simple concept that can be difficult to accomplish, especially in an engine or confined space. Tachometers have developed into highly accurate, compact devices. Some models even feature laser or photo reading technology which offers non-contact readings and can be used on extremely fast rotations without worrying about damage or injury.

This meter features that very technology, being able to measure rotations up to 99,999rpm. The added ability to measure on any surface of a rotating object makes this a more convenient meter to use. Great for testing hard to reach or extremely high rpm components. This meter uses visible light as its reading device so it is clear where the meter is pointed.

Simply attach the reflective tape to the component to be measured and turn the device on. The readings are updated every second for a quick and easy measurement and tracking of the rpm. THis meter can also make surface measurements with a cone tip, flat tip and a wheel. The 461895 Combination Contact Photo Tachometer User Manual is attached to this page to answer any additional questions.


  • Range:
    • 5 to 99,999rpm (contact: 0.5 to 19,999)
    • 0.2 to 6560ft/min
    • 0.05 to 1999.9m/min
  • Accuracy: ±(0.05%rdg +1d)
  • Sampling Time: 1sec > 60rpm
  • Resolution: 0.1rpm (0.5 to 999.9rpm);1rpm (>1000rpm)
  • Dimensions: 8.5 x 2.6 x 1.5”(215 x 65 x 38 mm)
  • Weight: 10.6 oz (300 g)

Unit Ship Weight: 1.5 lbs

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