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).
Query regarding the markings and fitment of tungsten contacts for a battery ignition make & break system.
| Identifier | ExFiles\Box 35\6\ scan 016 | |
| Date | 27th January 1921 | |
| X.2894 To EP.{G. Eric Platford - Chief Quality Engineer} from EFC. EFC1/S27.1.21. X. 2894. - TUNGSTEN CONTACTS FOR BATTERY IGNITION MAKE & BREAK. I have your note EP{G. Eric Platford - Chief Quality Engineer}17/F25.1.21, and I would like you to say whether the contacts fitted to the Demonstration Car are marked two or three as these sets are of different origin, would you also kindly inform me if the other three pairs have been fitted and, if so, to what cars. EFC. | ||