Hand-drawn sketch of a flanged component with handwritten notes indicating design considerations.
| Identifier | ExFiles\Box 11\2\ 02-page089 | |
| Date | 30th January 1929 guessed | |
| R D C - I - 3 E flange too near drain holes 28 | ||
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).