Technical drawing comparing two different fan mounting designs on a pipe or rod.
| Identifier | ExFiles\Box 103\5\ scan0088 | |
| Date | 21th June 1929 guessed | |
| ", | ||
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).