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).
The update of the instrument board on chassis 18-G-IV and 19-G-IV.
| Identifier | ExFiles\Box 166\8\ img014 | |
| Date | 4th February 1932 | |
| X6067. C - Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} BY/RD1/W.4-2-32. Re :- Chassis 18-G-IV and 19-G-IV. These two chassis are having Smith's Instrument Patches, and in order to bring the Instrument Board up to date, the latest type of Switchbox, having concealed mounting, should be fitted in accordance with our L.O.P. D.52990 which has been standard since the 151st. chassis in "T" Series. BY/RD. | ||