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 cross-section of a component labelled 'Web B'.
| Identifier | ExFiles\Box 179\3\ img108 | |
| Date | 31th January 1932 guessed | |
| SECTION ON, WEB 'B', 25°, .800"D, .900" | ||