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 showing two views of a packing ring for a starter motor pinion (40/50).
| Identifier | ExFiles\Box 62\1\ scan0180 | |
| Date | 19th October 1933 | |
| 45°, .150, .075, .084", .925 DIA., 1.200 DIA., 135, ROLLS-ROYCE, LTD., PRINT ROOM, OCT 20 1933, DERBY., PACKING RING FOR STARTER MOTOR PINION (40/50), SCALE 2/1, L.B/19.10.33 | ||