Extech Combination Contact/Photo Tachometer #461895 - 51-415-8

Brand:   Extech
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Extech Combination Contact/Photo Tachometer #461895

Combination Contact and Non-contact rpm measurements with visible light beam

461895 Combines both contact (0. 5 to 19,999 RPM) and non-contact (5 to 99,999 RPM) models for use in virtually all tachometer applications.

Uses visible light for non-contact measurements up to 6 in. (150 mm) from target.

Comes with:

  • Wheels for linear surface speed (0.2 to 6560 ft. /minute; 0.05 to 1999.9 m/minute) or RPM measurements
  • 4 AA batteries
  • 23 in. (0.6 m) reflective tape
  • Carrying case
  • and User Manual.


  • Characters on display reverse direction depending on contact or photo mode
  • Uses visible light to read up to 6" (150mm) from target
  • Memory/readings button holds last reading for 5 min and recalls min/max readings
  • Unique display where characters reverse direction depending on measurement mode you are in
  • Large 0.4” (5 digit) LCD display
  • Microprocessor based with quartz crystal oscillator to maintain high accuracy
  • Tachometer memory stores last, max and min readings
  • Provides wide RPM (photo and contact) and Linear Surface Speed (contact) measurements
  • Accurate to 0.05% with max resolution of 0.1rpm in either photo or contact mode
  • Complete with tips and wheel for rpm or linear surface speed, four 1.5V AA batteries, reflective tape and carrying case


Specifications Range
rpm Photo: 5 to 99,999 / Contact: 0.5 to 19,999
ft/min 0.2 to 6560
m/min 0.05 to 1999.9
Basic Accuracy ±0.05%rdg
Max rpm Resolution 0.1rpm
Dimensions 8.5x2.6x1.5" (216x66x38mm)
Weight 10.6oz (300g)

Click to View User's Manual

Click to see the Replacement Wheel Set for Extech Tachometer

Extech Combination Contact/Photo Tachometer #461895 - 51-415-8

Extech Combination Contact/Photo Tachometer #461895 - 51-415-8

Extech Combination Contact/Photo Tachometer #461895 - 51-415…