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).
Pencil sketch showing two views of a component with openings, annotated to illustrate how it is 'opened out'.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page048 | |
| Date | 21th November 1932 guessed | |
| opened out. from here | ||