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).
Patent-style drawing of an oscillograph element and its associated mechanical assembly.
| Identifier | ExFiles\Box 165\4\ img050 | |
| Date | 28th March 1928 guessed | |
| Fig. 1, OSCILLOGRAPH ELEMENT, 3, 10, 12, 13, 14, 16, 20, 22, 24, 30, 33, 34, 36, 38, 40, 42, 44, 46, 48, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 78, 80, 84, 86, 90, 92 | ||