The weight of a 'China' engine and gearbox unit for a 20 HP lote.
| Identifier | ExFiles\Box 107\4\ scan0097 | |
| Date | 10th January 1930 | |
| 74538 20 H.P lote 10-1-30. Weight of "China(Experimental Engine)" engine + gear-box unit = 662 lbs. Engine only = 552 lbs. [Initialed signature] | ||
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).