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 showing the sea level air temperatures required for boiling to occur at various altitudes.
| Identifier | ExFiles\Box 16\2\ Scan098 | |
| Date | 24th September 1934 guessed | |
| CURVES SHOWING SEA LEVEL AIR TEMPS. FOR BOILING. TO TAKE PLACE AT GIVEN ALTITUDE. SEA LEVEL AIR TEMP °C. TO BOIL AT GIVEN ALTITUDE. ALTITUDE IN FEET. | ||