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).
Letter from The Economic Car Light Ltd. introducing their new Automatic Dashboard Petrol Indicator.
| Identifier | ExFiles\Box 61\3\ scan0019 | |
| Date | 24th March 1930 | |
| COPY Telephone TERMINUS 3756 From: THE ECONOMIC CAR LIGHT LTD. 5-16, Cromer Street LONDON W.C.1 March 24th.1930 Messrs. Rolls-Royce Limited Nightingale Road DERBY BUYING DEPT Dear Sirs, We have pleasure in bringing to your notice our new Automatic Dashboard Petrol Indicator the result of three years experiment and which we have confidence in saying is superior to anything yet offered to you and surmounts the many difficulties inherent devices of this nature. We can definitely state that it will prove as reliable and accurate as any other instrument on your dashboard. We herewith send you an explanatory blue print of tank unit, connecting air pipe, and indicator. We may mention that one of the troubles of automatic indicators of this nature, depending on pneumatic transmission of pressure from the tank to the dashboard, has been the development of air locks in the pipe line after a prolonged period of use. This difficulty has definitely been overcome by our special air pipe which contains a core of double cotton covered wire and remains permanently porous. If you are interested our representative will call upon you with samples of the device and give you any further particulars you may require. (continued) ENCLOSURE Nº 858 "JJUS750" | ||