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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).
Requesting an order for four dozen closed-end Lodge sparking plugs for further testing.

Identifier  ExFiles\Box 162\6\  img082
Date  2nd July 1925
  
To Roy.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}

X4425

Hs{Lord Ernest Hives - Chair}9/LG2.7.25.

LODGE SPARKING PLUGS.

The new type Lodge sparking plugs which Mr. Hopps left with us 3 or 4 weeks ago are working very satisfactory.
We should like you to order for us 4 doz. more of these plugs so that we can confirm our tests.

We require the type with closed end as we find that these stand more heat than the open end.

Hs.{Lord Ernest Hives - Chair}
  
  


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