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).
Set of three graphs plotting pressure (LBS/D') relative to atmosphere against crankshaft degrees.
| Identifier | Morton\M7\ img061 | |
| Date | 20th December 1923 guessed | |
| LBS/D" RELATIVE TO ATMOSPHERE. CRANKSHAFT DEGREES ATS E.C I.O Graph 1 X-axis: 0, 25, 50, 75, 100 Graph 2 X-axis: -10, 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130 Graph 3 X-axis: 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130 Y-axis: 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130° | ||