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).
Receipt of new Lodge Company spark plugs for testing.
| Identifier | ExFiles\Box 162\6\ img070 | |
| Date | 23th February 1925 | |
| Hs.{Lord Ernest Hives - Chair} from ROY.{Sir Henry Royce} H4425 ROY{Sir Henry Royce}8/MG23.2.25 The Lodge Company have sent us a further dozen of their new type detachable steatite plugs, No.183/130 (which you have under observation); also 6 of their sports type mica insulated plug, Model H1 - which I hand you herewith. They will be glad if we will arrange to test these, particularly for pre-ignition and oiling, and let them know the result in due course. ROY.{Sir Henry Royce} Plugs to accompany this memo. | ||