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).
Blueprint section view for a water cooling component with drilling and tapping instructions.

Identifier  ExFiles\Box 179b\3\  img248
Date  12th November 1911
  
SECT, DR..., 1.400 +.010 -0, TAP .375 DIA 20 TPI, .730 -2", 100°, THIS HOLE TO BE DRILLED TO, WATER COOLING TO INLET, I 2 ENG -, E.A.B, 12-11
  
  


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