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).
Electrical experimental record sheet for a Sequence Starter (SS) duplex push button switch.
| Identifier | ExFiles\Box 64\4\ scan0279 | |
| Date | 12th March 1929 | |
| X7655 ELECTRICAL EXPERIMENTAL RECORD SHEET. Date:- 12-3-29 Sequence Starter (SS{S. Smith}) duplex push button switch C. Date on. Location. Date off. REMARKS. Miles reading Start. Miles reading Finish. Miles covered Total Miles. 12-3-29 22 EX Received from shop tested, and fitted to 22 EX. Still in operation. 00265 22-4-29 22EX. Starter system failed and not in action. 8766 8501 8501. 23-5-29 lab Push button removed from chassis - one set of carbons found making contact. This switch is now superseded by one of modified design. | ||