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).
Specification for 1¼ and 1¾ value ballast resistances.

Identifier  ExFiles\Box 168a\5\  img035
Date  19th January 1929
  
X7720
19.1.29.
1¼ and 1¾ VALUE BALLAST RESISTANCE
Specification.
Pure nickel wire, gauge 32 S.W.G. 30 inches
and 35 inches length per ballast respectively.
EFC.
  
  


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