Starting at $199.99

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  • Large 5-digit LCD where characters on display reverse direction depending on measurement mode you are in
  • Range (photo mode): 5 to 99,999 rpm
  • Range (contact mode): 0.5 to 19,999 rpm; 0.2 to 6560 ft/min (or equivalent)
  • Accuracy: ±(0.1% rdg + 1 digit) for both contact and photo modes
  • Microprocessor based with quartz crystal oscillator to maintain high accuracy
  • Provides wide RPM (photo and contact) and Linear Surface Speed/Length (contact) measurements
  • Laser guided for greater distance non-contact measurements up to 4.9ft (1.5m)
  • Memory stores Max/Min/Last readings

What's in the Box

  • Cone tip and wheel for rpm or linear surface speed
  • Reflective tape
  • (4) 1.5V AAA batteries

The Extech RPM40 tachometer is a versatile instrument that uses both photo and contact techniques to provide rotational and linear surface speed measurements. This convenient, pocket-sized meter is ideal for contact measurements of flywheels, conveyors, pumps, and elevators as well as non-contact measurements of motors, fans, and gears.

The Extech RPM40 tachometer has a range of 0.5 to 19,999 rpm for contact measurements. In contact mode the RPM40 can also measure linear surface speed from 0.2 to 6560 ft/min (or equivalent). A narrow beam laser photo tachometer can make non-contact measurements from 5 to 99,999 rpm. In non-contact mode measurements can be made up to 4.9ft (1.5m) from the target for improved safety and accessibility.

Extech Reflective Tape
Reflective Tape; 23" strips (10 pack) for use with any Extech tachometer