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 leakage versus temperature for a K.L.G. V9/1 component with heavy lead deposit, showing heating and cooling curves.
| Identifier | ExFiles\Box 162\4\ img174 | |
| Date | 11th September 1936 guessed | |
| K.L.G. V9/1 HEAVY LEAD DEPOSIT HEATING COOLING LEAKAGE (MEGOHMS) TEMPRE °C. | ||