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 heating and cooling performance of a new KLG 850 A plug against temperature.
| Identifier | ExFiles\Box 162\4\ img170 | |
| Date | 7th September 1936 guessed | |
| NEW PLUG (KLG 850 A) HEATING COOLING TEMP RE °C. 0 100 200 300 400 500 600 700 800 | ||