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).
Quoting correspondence from Ferranti Limited regarding the supply of a dashboard ammeter.
| Identifier | ExFiles\Box 168\5\ img130 | |
| Date | 23th July 1928 | |
| X2498 EPC. from ROY.{Sir Henry Royce} ROY{Sir Henry Royce}8/MG23.7.28 Re: Ferranti Dashboard Ammeter Messrs. Ferranti Limited write as follows: "In connection with the call made upon you yesterday by our Mr Baggs, we now confirm that in the event of an order being placed with us for instruments of the kind offered we shall supply them with the zero adjustor completely insulated from the element. "There is a small point in connection with the zero adjustor on the instrument you have, namely the size of the lettering on it may not be neat enough but this can be made to line up with your standard requirements if the matter became a production job. ROY{Sir Henry Royce} | ||