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 A.T. Speedometer Co. Ltd. regarding the metal used for a 'System Cup' in their devices.
| Identifier | ExFiles\Box 50\4\ Scan119 | |
| Date | 7th June 1927 | |
| CONTRACTORS TO THE WAR OFFICE THE ROYAL AIR FORCE AND LEADING MANUFACTURERS. A.T. SPEEDOMETER CO. LTD. Trade Mark. Directors: F. {Mr Friese} T. FISHER, H. {Arthur M. Hanbury - Head Complaints} O. {Mr Oldham} BOOTH, S. D. {John DeLooze - Company Secretary} McKELLEN. Telephone : Western 1422. Telegrams : Aytespeedo-Hammer, London. Your Ref........... Our Ref. GOB/AV. 20, Avonmore Road, West Kensington, London, W.14. 7th June, 1927 PATENTEES & MAKERS OF MAGNETIC SPEEDOMETERS FOR MOTOR CARS AND MOTOR CYCLES. A.T. ELECTRIC SCREEN WIPERS AND PETROL LEVEL GAUGES. MOTOR CLOCKS, TACHOMETERS, MILEAGE RECORDERS. REVOLUTION COUNTERS AND INDICATORS FOR MOTOR CARS, MOTOR BOATS, ENGINES, ETC. ALL CLASSES OF SCIENTIFIC INSTRUMENTS. REPAIRS A SPECIALITY. Sheet No.2. devices and also utilising a different type of metal than aluminium for the System Cup which as you know revolves in the magnetic field. Trusting that your tests will prove satis-factory to our mutual advantage and awaiting your further remarks. Yours faithfully, for A.T.SPEEDOMETER CO. LTD. | ||