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).
More economical modified design for the instrument board light dimmer switch resistance unit.
| Identifier | ExFiles\Box 168a\2\ img249 | |
| Date | 2nd November 1936 | |
| c. Rm{William Robotham - Chief Engineer}/Wst. 86139. BY/RD.3/B.2.11.36. Dimmer Switch : Instrument Board Lights. We hand you herewith blue print of RR.Sch.1007. This scheme shows the modified design of resistance unit which we think will be more economical to produce than the previous one. Details will be issued in the course of a few days. BY/RD. | ||