Index card referencing a description of De Beer's Petrol Economiser.
| Identifier | ExFiles\Box 20\6\ Scan003 | |
| Date | 23th September 1909 | |
| R.R. 148 (20 H) (F 148. 17.6.09.) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 103. Consumption De Beer's Petrol Economiser 3800. 5500 For description of Petrol Economiser see 'The Car' 15/9/09 X985. Q 23.9.09 eR | ||
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).