Laser Tachometer





  The TA105 Laser Tachometer and counter can be used to measure and test the number of rotations per minute (RPM) or total number of rotations or events on any spinning shaft, pulley, wheel, drive belt, fan, or other rotating objects in general, safely, accurately and easily. Numerous application uses can be found in industrial, automotive, heavy duty, HVAC, agricultural and aviation maintenance sectors.

  Wide measuring range: 2.5 to 99,999 RPM, 2" to 20" reading distance, Min/max and last reading memory recall, <0.5 sec. response time, count function and auto power off.


  • Measures from 2.5 to 99999 RPM
  • 0.05 % accuracy
  • 2 to 20" (5 to 50 cm) measuring range
  • On target display indicator
  • RPM, Total revolutions, maximum, minimum and last reading memory
  • Laser powered optical system is easy to use under all light conditions
  • Only setup required is a reflective mark on the rotating part

Simple and easy to use

  • Simply attach a small piece of reflective tape to the shaft or rotating part, aim the laser beam to the reflective mark and read the RPM or Total revolutions count on the large display.
  • Maximum, minimum and last reading are automatically saved into the internal memory of the instrument, and can be displayed at any time.
  • Bright and powerful laser optical system allows for easy targeting of rotating shaft, wheel, etc., even in bright daylight.
  • Measurement can be obtained from safe and comfortable distances from 2" to 20"
  • The large 5 digits digital display allows measurements of up to 99,999 RPM without need to switch scales or multiply readings.

Technical Specifications

  • Display:
  • 5 x 0.7" (16mm) digits display
  • On target indicator
  • RPM indicator
  • Low battery indicator
  • Resolution: ±(0.05%+1 Digit)
  • Operating Temperature: 32°F to 122°F (0°C to 50°C)
  • Response time: 0.5 sec.(over 120 RPM)
  • Range Selection: Auto Ranging
  • Memory: Max. Value, Min. Value and Last Value stored automatically in memory
  • Distance to target: 2" to 20" (50 mm to 500 mm)
  • Laser Pointer: Laser Diode, < 1mW output wavelength 630-670 nm, Class II
  • Power Source: 4 x 1.5 V type AA/UM3 or equivalent
  • Battery life: Approx. 5 hours.(w/alkaline batteries)
  • Dimensions: 6.3"x 2.8"x 1.5" (160 x 72x 37 mm)
  • Weight: 6.96 oz. (200 g) with battery

For use in

  • Internal combustion engines
  • Electric motors
  • Rotating machinery


  • TA105
  • Soft Pouch
  • 16" (400 mm) long reflective tape
  • 4 x 1.5 V alkaline battery
  • User's Manual