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).
The polarity testing of experimental and standard production coils.

Identifier  ExFiles\Box 142\1\  scan0086
Date  1st October 1937
  
-2-

Rm{William Robotham - Chief Engineer}/RC.{R. Childs}9/AP.1.10.37

The R.R. coil was made before the alteration was instructed. All experimental coils will be tested for polarity and marked accordingly, as soon as possible. We have tested a standard production coil with regard to this polarity and find same correct.

Rm{William Robotham - Chief Engineer}/RC.{R. Childs}
  
  


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