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).
Table of measurements and hardness tests for Bottom Yoke Needle Bearings, Ph. III.
| Identifier | ExFiles\Box 95\2\ scan0017 | |
| Date | 4th February 1936 | |
| +346 Hs{Lord Ernest Hives - Chair}/Les.3/JH.4.2.36. Bottom Yoke Needle Bearings Ph.III. | | 31-EX. | | Bumper No.1 | |---|---|---|---|---| | | N.S. | O.S. | N.S. | O.S. | | Shaft. | 1.002. | 1.0015 | 1.0021 | 1.0015 | | Bore | 1.200 | 1.2002 | 1.1998 | 1.1998 | | Bore when in Yoke. | 1.1992 1.1996 Not round | | | 1.1997 | | Rollers. | .09984 | Flats. | .09984 | .0984 | | Gap between first and last roller. | .012. | | .006 | .008 | Both Brinel Hardnesses on shaft 820 core hardness 220. | ||