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 plotting load in pounds against the relative movement of two ball ends for different component tests and settings.
| Identifier | ExFiles\Box 65a\3\ scan0099 | |
| Date | 13th August 1929 guessed | |
| LOAD LBS. 500 400 300 200 100 0 .100 .200 .300 OPTINON TESTED 21 E.X. AS SENT OUT. MEAN OF BOTH ENDS. MODIFIED SETTING OF S.S. TUBE TO N. SCH. 2301 RELATIVE MOVEMENT OF TWO BALL ENDS. | ||