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).
List of parts required for a backing light switch, scheme 3029.
| Identifier | ExFiles\Box 168a\2\ img005 | |
| Date | 28th February 1930 | |
| X6029 c. EFC. BY/RDS/DM.{D. Munro} 28.2.30. Backing Light Switch. "N" Scheme 3029. Sec.8180. Will you please put in hand one Backing Light Switch to L.O.P. D.72573. The following details are the parts required:- F.50070 Stud for Cover. D.72560 Switch Body. D.72561 Cover for Switch. D.72562 Switch Base. D.72563 Terminal Stud. D.72564 Terminal Stud (Contact) D.72565 Spring Barrel. D.72566 Contact Maker. D.72567 Insulating Plug. D.72568 Spring Ring. D.72569 Retaining Collar. D.72570 Spring Contact. D.72571 Spring (Inner) D.72572 Spring (Outer) Blueprints of all these parts are attached herewith together with an extra one for the castings and mouldings. BY/RD. | ||