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).
Performance comparison graph of petrol pumps, plotting delivery rate against pump speed.
| Identifier | ExFiles\Box 27a\2\ Scan077 | |
| Date | 14th June 1932 | |
| BRITISH PETROL PUMP TESTS. COMPARISON BETWEEN R.R. AND AMAL PUMPS. DELIVERY PTS/HR. PUMP SPEED R.P.M. 160 140 120 100 80 60 40 20 500 1000 1500 2000 R.R.LEC2961 "AMAL" DOUBLE FABRIC "AMAL" METAL PISTON | ||