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 data including temperatures, petrol consumption, and average speed over a five-day test period.
| Identifier | ExFiles\Box 5a\2\ 02-page416 | |
| Date | 11th August 1934 | |
| 21 G IV. READINGS EVERY 25 MILES TABLE HEADERS: Row 1: AFTERNOON, MORNING, MORNING, MORNING, AFTERNOON, MORNING, AFTERNOON Row 2 (AVERAGE SPEED): 44.7, 49.3, 45.2, 48.7, 36.2, 45.8, 50.4 Row 3 (DATE): 7/8/34, 8/8/34, 9/8/34, 10/8/34, 11/8/34 Row 4 (DRIVERS): ROSE., GRYLLS. HAMILTON., , GRYLLS. HAMILTON., ROSE. WALSH, GRYLLS. HAMILTON, PATTINSON ROSE Row 5 (MILES): 354., 345., 317., 341., 214., 252., 378. GRAPH SECTIONS & Y-AXIS LABELS: PETROL CON.: 20MPG, 10MPG WATER TEMP & OIL TEMP: 90°C, 80°C, 70°C, 60°C, 50°C AIR TEMP: 40°C, 30°C, 20°C, 10°C | ||