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).
Chart showing A.S.T.M. & Series 30 at 375°F ratings for clear and leaded blends of isopropyl ether in aviation gasoline.
| Identifier | ExFiles\Box 150\1\ scan0224 | |
| Date | 30th January 1936 guessed | |
| FIG. 6. A.S.T.M. & SERIES 30 @ 375°F. {Mr Friese} RATINGS OF CLEAR & LEADED BLENDS OF ISOPROPYL ETHER IN AVIATION GASOLINE. Y-AXIS: OCTANE NUMBER Y-AXIS VALUES: 65, 70, 75, 80, 85, 90, 95, 100 X-AXIS: PER CENT ISOPROPYL ETHER IN AVIATION GASOLINE. X-AXIS VALUES: 0, 10, 20, 30, 40, 50 LINE LABELS: - 3cc TEL/G (with ASTM and SERIES 30 lines) - 1cc TEL/G (with ASTM and SERIES 30 lines) - CLEAR (with ASTM and SERIES 30 lines) | ||