Nisonger Instruments: the exclusive Smiths U.S. Warranty & Service Center since 1949
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427 Cobra OEM Style 270°
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427 Cobra and GT40 Speedometers
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Nisonger converts Smiths RV Series Electric Tachometers for use with virtually any Electronic or Points Ignition Systems.

In recent years, an ever increasing number of British car owners have been updating their cars with electronic ignitions. Unfortunately, the Smiths & British Jaeger RV Series "Loop Tachs" used in many of these vehicles are not truly compatible with any electronic ignition systems. To resolve this problem, Nisonger has developed new circuitry that eliminates the Loop Assembly and allows these Tachometers to be used with virtually any electronic or points ignition systems without changing the outward appearance of the original equipment Tachometer. As is the case with all of Nisonger's rebuilds, the converted Tachometer is guaranteed for 1 year.

Original Smiths RV Series Circuit Board has been removed
and new circuit board is being installed.

Converted Smiths RV Series Tachometer
being calibrated for use with an MSD ignition.

Converted Smiths RV Series Tachometer
being calibrated for use with a Pertronix Ignition.

Terminals on the back of the case of the converted
Smiths RV Series Tachometer have all been labeled
to assures ease of installation.


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