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).
Blueprint of a mechanical component featuring bearings, an oil lead, and various dimensions.
| Identifier | ExFiles\Box 179\3\ img109 | |
| Date | 31th January 1932 guessed | |
| OIL LEAD .156 DIA 30° Y .109" HOLE 3 BEARINGS 'Y' 1.600 | ||