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 main and auxiliary switch unit with mechanical interlock for a sequence starter, Unit A, Sheet I.
| Identifier | ExFiles\Box 64\4\ scan0312 | |
| Date | 3rd December 1929 | |
| X7655 Main and Auxiliary switch unit with mechanical interlock for Sequence Starter ELECTRICAL EXPERIMENTAL RECORD SHEETS. Unit A (Sheet I) | Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total miles. | |------------|-----------|------------|-----------------------------------------------|----------------------|-----------------------|----------------|--------------| | 4-12-28 | lab. | 5-12-28 | Received from shop. Tested on bench OK. | | | | | | 5-12-28 | 18 EX | 12-12-28 | Fitted to S.S. chassis 18EX. (E.F.C., gaps) | | | | | | 12-12-28 | Shop. | 13-12-28 | Removed and sent into shop for modn. | | | | | | 13-12-28 | lab. | 14-12-28 | Received back for test. | | | | | | 14-12-28 | 19EX | | Tested OK. Fitted to 19EX | 0000 | 6249 | 6249 | 6249 | | 22-3-29 | " | | | | 6717 | 468 | 6717 | | 10-4-29 | " | | Speedometer changed | 0000 | 0059 | 59 | 6776 | | 15-4-29 | " | | | | 0285 | 226 | 7002 | | 4-5-29 | 19EX | | Completely modernized and refitted. | 6696 | | | | | 4-6-29 | " | | | | 8572 | 1876 | 1876 | | 8-7-29 | " | | | | 10090 | 1518 | 3394 | | 24-8-29 | " | | | | 12004 | 1914 | 5308 | | 28-10-29 | " | | | | 14657 | 2653 | 7961 | | 3-12-29 | " | | | | 15878 | 1221 | 9182 | | ||