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 for a switchbox and instrument illumination bulbs.
| Identifier | ExFiles\Box 168a\1\ img071 | |
| Date | 16th February 1937 | |
| -3- BY/ED.{J. L. Edwards}2/B.16.2.37. Switchbox Parts (Cont'd):- K.2604A. Screw. 3 off. E.89851 Bush. 2 off. F.80644. Spring. 2 off. D.74900. Plug. 2 off. .312 dia: Steel Ball. 2 off. D.75184. Push Button. 1 off. E.51034. Spring Ring. 1 off. Pieces required to be made to blueprints already issued to the Experimental Dept. D.75875. Contact. 8 off. D.75876. Link. 8 off. D.75877. Spring. 8 off. D.77703. Nut. 2 off. The Bulbs for illuminating the instruments should be in Series, in threes, the number required being :- 3 1/2 volt Bulbs. (M.E.S.). 6 off. BY/TD. | ||