R-1 RPM Tachometer Instrument


  • Primary Replacement
  • 2 1/4″ Flush Mount (3 1/8″ Adaptor Plate Available)
  • Displays Accurate RPM Measurement In Digital And Analog Format.
SKU: R-1 RPM Category:

FAA Approved

  • FAA STC’d, TSO’d as a Primary Replacement.
  • Replace your existing tachometer.

Quick, Yet Stable Readings

  • Proprietary algorithms ensure the RPM reading is rock solid.
  • The fully backlit digital display allows for quick interpretations.

Accurate, Dependable & Easy To Use

  • Electronics International consistently has been a leader in digital engine instrumentation since 1979.
  • Designed and built in the USA.

R-1 Overview

Retail Prices

Included in the package:

  • R-1 Instrument
  • RPM Isolators
  • A-102 3 1/8″ Adaptor Plate
  • RC-1 Tach Cable Port Cover
  • Wire Harness
  • Installation/Operating Instructions
  • STC

Note: order must specify range markings. See R-1 Configuration Worksheet in our downloads section for more information.

DescriptionPackageRetail PriceRebate Amount
R-1 PackageR1$648$50 Click Here for Details

Lead Time:

Usually ships within 3-5 business days.


2.50” H x 2.50″ W x 3.65″ D , 2 1/4” Flush Mount

10 oz (Instrument Only)

Power Requirements
7.5 to 35 Volts, Typical: 0.3 amps @ 12 Volts


  • Viewable in direct and indirect sunlight.
  • 270 degree analog arc for quick reference.

Fully backlit and dimmable for night flights.


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