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 repeated test results for a cleaned KLG 850A plug, plotting an unspecified value against temperature.
| Identifier | ExFiles\Box 162\4\ img173 | |
| Date | 29th August 1936 guessed | |
| ③ KLG 850 A PLUG CLEANED & TEST REPEATED TEMPRE °C HEATING COOLING Y-AXIS: 2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 200, O X-AXIS: O, 100, 200, 300, 400, 500, 600, 700 | ||