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).
Title page or section divider for the 'Ammeter'.
| Identifier | ExFiles\Box 46\3\ Scan007 | |
| Date | 22th November 1923 guessed | |
| AMMETER | ||