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).
To standardize the maximum load on springs.
| Identifier | ExFiles\Box 5\5\ 05-page04 | |
| Date | 10th September 1912 | |
| R.P. 1 of .200.W.400 Galls. 12 yds. 1/9/12 Maximum load on springs to be made standard file 10/9/12 H.R. | ||