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).
Engineering drawing of a multi-journal shaft with dimensional details.
| Identifier | ExFiles\Box 180\M4\M4.2\ img030 | |
| Date | 19th May 1921 guessed | |
| 28.400, 21.915, 17.182, 12.449, 7.716, 1.750, 1, 2, 3, 4, 5, 12 DIA., 2.750, 1.975, 5.970, 9.970, 14.703, 19.433, 24.166, 26.650, 150 R, 2.125, 2.750, 1.325, .475 | ||