The original and reduced weights of a Dropped Cross Member.
| Identifier | ExFiles\Box 107\4\ scan0133 | |
| Date | 12th November 1934 | |
| X4538 12.11.34 Dropped Cross Member Weights. Originally 115¼ ozs. Reduction 3 lbs. 3½ ozs. or 45%. | ||
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).