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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).
Letter of inquiry to Hopkinsons Ltd. regarding the supply and price of two specific pressure gauges.

Identifier  ExFiles\Box 133\4\  scan0354
Date  19th January 1939
  
1126

c. EJJ/DH.{D. Henderson - Showroom}

Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/MH.{M. Huckerby}

19th. January, 1939.

Messrs. Hopkinsons Ltd.,
HUDDERSFIELD.

Your Ref. 'RCA'E.4249.

Dear Sirs,

Thank you for your letter of 17/1/39. It is essential for our purposes that we have 1 lb. divisions on the pressure gauge. We could, however, achieve what we want with two gauges. One should read from 300-400 in 1 lb. stages, and the other from 0-100 in 1 lb. stages. They should both have the same thread for the pipe connection. Can you supply such gauges, and if so, at what price with 8" dials ?

Yours faithfully,

for ROLLS-ROYCE LTD.
  
  


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