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 mechanical component and joint assembly.
| Identifier | ExFiles\Box 170\1\ img035 | |
| Date | 1st November 1938 guessed | |
| PAUL QUINN LTD 898 | ||