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 effect of different anti-freezing solutions on freezing point.
| Identifier | ExFiles\Box 151\3\ scan0123 | |
| Date | 28th November 1929 guessed | |
| EFFECT OF ANT FREEZING SOLUTIONS FREEZING POINT. CENTIGRADE 0 -5 -10 -15 -20 -25 FREEZING POINT FARENHEIT 32 23 14 5 -4 -13 % OF ANTI FREEZING COMPOUND BY VOLUME 0 10 20 30 40 50 PURE GLYCERINE OR TRIMETHYLENE GLYCOL ETHYLENE GLYCOL | ||