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 detailing a modification to a diffuser outer tube.
| Identifier | ExFiles\Box 13\3\ 03-page284 | |
| Date | 4th February 1920 guessed | |
| V.1060. 6. HOLES DRILL .055 EQUALLY SPACED FOR OTHER DIMENSIONS SEE E.81573. MODIFICATION TO DIFFUSER (OUTER TUBE) | ||