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 showing a cross-section of a threaded mechanical component with dimensions.

Identifier  ExFiles\Box 171\3\  img166
Date  18th May 1925 guessed
  
TAP 1.500 DIA
16 THDS PER 1" R.H.
.900 DIA
.150 RAD
.50
.500
DR
  
  


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