Rolls-Royce Archives
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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).
Return and calibration of a 20/25 A.T. speedometer.

Identifier  ExFiles\Box 59\2\  Scan290
Date  13th December 1933
  
86051
By/Mtn. From Hs{Lord Ernest Hives - Chair}/Wst.

Hs{Lord Ernest Hives - Chair}/Wst.8/MA.13.12.33.

20/25 A.T. SPEEDOMETER.

We are returning to you a special A.T.
Speedometer No.G.847 which had the new scale fitted,
giving a certain percentage fast reading at high
speeds.

We have tested this speedometer and find
it now to be quite OK. giving the required amount of
fast reading. We attach a table of our calibration
figures for your reference.

Hs{Lord Ernest Hives - Chair}/Wst.
  
  


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