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Tachometer, Air Ministry, Mk IA, 6C/223 (Serial 134/42)

Smiths

Tachometer, Air Ministry, Mk IA, 6C/223 (Serial 134/42)

Not for Sale

This artifact resides in our Private Collection, yet we welcome inquiries from restorers, museums, or serious enthusiasts. Please email us with the name of the artifact at Curator@AeroAntique.com.

Here is a WWII-era Mk IA chronometric (mechanical) tachometer of the British Royal Air Force, Air Ministry stores reference number 6C/223, serial number 134/42.  This tachometer measures from 500 to 5000 RPM, and has a totalizing counter which measures up to the millions of RPM.  The "6C" prefix in the stores reference number indicates that this tachometer was intended as a test instrument, and the "42" in the serial number indicates a manufacturing year of 1942.

A flexible cable shaft would be affixed to the connector at the bottom for measurement. The indicator is in good condition given its age.  The yellow pointer is a bit loose at the center axis and may fall off in shipment, but it could be cemented in place.  Measures ~5.5 inches diameter and ~3.5 inches deep.

 


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