Vibration, Time & Speed

MT90 Digital Tachometer

MT90 digital engine tachometer - click to enlargeThe Murphy Selectronic® MT90 is a digital tachometer. Its high accuracy and dependability result from use of a quartz crystal time based and digital, solid-state electronics. The MT90 also has back-lighting for easy readings in low lit areas; this lighting requires a battery power source.


  • ±1 RPM accuracy
  • Easy calibration
  • Clear-read LCD display
  • Backlight for night viewing (battery powered models)
  • Input source can be a magnetic pickup or engine charge alternator
  • Power supplied by magnetic pickup or 12, 24, or 32 VDC battery system


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