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).
Weight specification for a 1908 type gearbox, chassis 712.
| Identifier | ExFiles\Box 3\3\ 03-page002 | |
| Date | 22th January 1908 | |
| Gear Box weight. 3700 x 200 1908 type (Chassis 712). with couplings etc. 114 1/2 lbs with out oil 6 pints. 6 lbs. is weight CP 22/1/08 | ||