Speedometer test results for a 49-GB car, comparing indicated versus actual speeds.
| Identifier | ExFiles\Box 8\2\ 02-page37 | |
| Date | 27th January 1923 | |
| X613 SPEEDOMETER ON 49-GB CAR. X263/X613 27.1.23. .65 f.p.s. slow at 10 m.p.h. .1 . . . 20 m.p.h. 1 . . . 30 m.p.h. 2 . . . 40 m.p.h. 1.2 . . . 50 m.p.h. ----------------- M. {Mr Moon / Mr Moore} P. H. {Arthur M. Hanbury - Head Complaints} INDICATED ACTUAL 10 9.55 20 20 30 29.68 40 38.8 50 49.2 ----- ----- | ||
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).