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).
Ferranti ammeter, referencing other correspondence.
| Identifier | ExFiles\Box 168\5\ img124 | |
| Date | 9th December 1927 | |
| W/S To PN.{Mr Northey} from EFC. X 3498 EFC9/T9.12.27. FERRANTI AMMETER. Answering your PN{Mr Northey}3/EH23.11.27, we attach copies of our EFC1/T3.10.21 and EFC3/T1.11.27 which will explain how the matter stands. EFC. | ||