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).
Analysis of the chemical composition of a nickel centre from a sparking plug.

Identifier  ExFiles\Box 162\6\  img083
Date  4th July 1925
  
Hs.{Lord Ernest Hives - Chair}
+4425
H13/EA4.7.25. Laboratory.

Re Nickel Centre of Sparking Plug.

Analysis.

Iron -------- 0.35 %
Manganese ---- 0.24 %
Other Impuruities Negligible.

Hl.
He
  
  


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