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).
Detailed schematic of an oscillograph element.
| Identifier | ExFiles\Box 165\4\ img044 | |
| Date | 28th March 1928 guessed | |
| OSCILLOGRAPH ELEMENT Fig. 1 10 20 30 31 32 34 35 36 37 38 39 50 51 52 54 61 62 64 70 71 75 76 78 | ||