Impregnation of ignition coils with bitumen compound and their attached output curves.
| Identifier | ExFiles\Box 164\5\ img315 | |
| Date | 26th October 1937 | |
| -2- Rm {William Robotham - Chief Engineer} /RC. {R. Childs} 5/MH. {M. Huckerby} 26.10.37. To D75673 ignition coils be impregnated with bitumen compound. Output curves of the above coils are attached. Rm {William Robotham - Chief Engineer} /RC. {R. Childs} | ||
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).