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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).
Feasibility of a new clock-faced petrol gauge and potential installation issues.

Identifier  ExFiles\Box 19\3\  Scan260
Date  5th April 1930
  
X7772
X7772
X4523

To Hs.{Lord Ernest Hives - Chair} from Oy.
c.c. Hives
c.c. Spen.

Oy6/DM.{D. Munro}April 5/30.

Petrol Gauge. Sec.7190.

Yours of Feb.13/30 re K.S. 3 pipe instrument and New Nivex.

We should certainly like a clock faced instrument if reliable, even more so if it were represented in the U.S., but we shall have trouble in making a neat installation if we have to put a pump on the dash. Also, I do not see that any provision is made to prevent volatile parts of the fuel from being carried into the line and condensing in it, forming "slugs" which alter the reading.

I think you would have to go a long way to beat the gauge on 404 MR for general usefulness.

pp Oy
  
  


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