Blueprint showing a cross-sectional view of a mechanical component.
| Identifier | ExFiles\Box 171\3\ img156 | |
| Date | 5th March 1925 guessed | |
| SCHEME Nº 479 | ||
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).