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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Query regarding the revolutions per mile for standard P.2. and 20/25 A.T. speedometers.

Identifier  ExFiles\Box 59\2\  Scan091
Date  3rd December 1930
  
X4308.

Ey/Cgh.{W Clough} from EFC.

EFC2/AD3.12.30.

X.4308. A.T. SPEEDOMETERS.

Will you please let me know the revolutions
per mile at which we are at present ordering standard
P.2. and 20/25 speedometers.


EFC.
  
  


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