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).
Stating the weight of a G.111 Gearbox with right hand levers.
| Identifier | ExFiles\Box 107\4\ scan0058 | |
| Date | 3rd April 1924 guessed | |
| X.4538 Weight of G.111 Gearbox with right hand levers :- 92 lbs. | ||