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).
Hand-drawn graph charting vehicle performance metrics like speed, temperature, and fuel consumption over several days.
| Identifier | ExFiles\Box 5a\2\ 02-page415 | |
| Date | 11th August 1934 guessed | |
| Top Title: 21 G IV. Top Right Title: Readings Every 2.5 Miles Column Headers: MORNING, AFTERNOON, AFTERNOON, MORNING, AFTERNOON, MORNING Row: Average Speed Data: 43.2, 47.3, 50.9, 49.4, 46.34, 45.4 Row: DATE Data: 2/8/34, 3/8/34, 4/8/34, 9/8/34 Graph Section Labels: PETROL, WATER TEMP, OIL TEMP, AIR TEMP Row: DRIVERS Data: ROSL, GRYLLS Hamilton, G.W.H. GRYLLS Hamilton, PATTINSON GRYLLS, Roberts. Martindale., GRYLLS Hamilton Row: MILES Data: 340, 307, 431, 348, 355, 318 Y-Axis Labels: 20MPG, 10MPG, °C, 90°C, 80°C, 70°C, 60°C, 50°C, 40°C, 30°C, 20°C, 10°C | ||