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 test results for B.I. H.T. Ignition Cables, noting that reel B.I.123 failed the ionization test.

Identifier  ExFiles\Box 167\3\  img076
Date  30th June 1931
  
To G/Mt.
c. to RHC{R. H. Coverley - Production Engineer}/SMD.{J. Smedley}
6110.
Wst/RC.{R. Childs}3/JH.30.6.31.
re B.I. H.T. Ignition Cables.
9 reels, B.I. 116 - B.I. 125 with the exception of B.I.123, have passed the required tests and may be issued to production. B.I.123 has failed on the ionization test and should be returned to the makers.
Wst/RC.{R. Childs}
  
  


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