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).
Drawing of a special ball bearing with dimensions and tolerances.
| Identifier | ExFiles\Box 94\2\ scan0097 | |
| Date | 3rd December 1936 | |
| 100 3/4" To -.002" 1 5/8 DIA. To +.0002" -.0003" 3/32 R 3 1/4 DIA. -.0008 To -.0013" 15 - 7/16 DIA. BALLS. Brg. No. N2674 Desc. SPECIAL BALL BEARING D.O. 12. THE Hoffmann M'f'g Co. Ltd. Dr'n S.G.R. Passed NV Tr{Capt. F. W. Turner - Finance}'c'd Ch'k'd J.B.C. Date 3-12-36 Drg. No. 41-473L | ||