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).
Blueprint showing a cross-section of a shaft and bearing assembly.
| Identifier | ExFiles\Box 55\4\ Scan016 | |
| Date | 10th February 1927 guessed | |
| [ "HORIZONTAL GROOVE", "IN SHAFT FOR SMALL", "BEARING", "ANNULAR GROOVE", "030' PASSAGE" ], | ||