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).
Hand-drawn winding diagram for a commutator-type electrical machine.
| Identifier | ExFiles\Box 68\4\ scan0185 | |
| Date | 24th March 1919 guessed | |
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