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).
Graph of Boost Pressure and Temperature against RPM for an Alfa-Romeo engine.
| Identifier | ExFiles\Box 124\5\ scan0036 | |
| Date | 15th March 1939 | |
| ALFA-ROMEO BOOST PRESSURE & TEMPERATURE BAROMETER 766 M/M INTAKE TEMPERATURE 12°C BOOST TEMPERATURE BOOST PRESSURE BOOST PRESSURE INS. MERCURY 2 4 6 8 10 12 BOOST TEMPERATURE °C. 20 25 30 35 40 45 R.P.M. 1000 1500 2000 2500 3000 3500 4000 4500 V1302 15-3-39 | ||