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