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).
Inquiry to Lodge Plugs Ltd. about the material used for the centre electrode in their C.9 Type plugs.
| Identifier | ExFiles\Box 79\1\ scan0233 | |
| Date | 26th October 1920 | |
| C O P Y. R.{Sir Henry Royce} 235 A (100 T) (S.F. 846 6-8-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2460 Wd{Mr Wood/Mr Whitehead}8/NJ261020. 26th October 1920. Messrs. Lodge Plugs Ltd., Rugby. Dear Sirs, Lodge Plugs - C.9 Type. It has been reported to us that you are employing Firth's Stainless Steel for the centre electrode of these Plugs. Will you kindly say whether the report is correct. Yours faithfully, FOR ROLLS-ROYCE LIMITED. [Signature] J.P. Whitehead. | ||