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).
Exploded diagram of a locking device for steering ball pins.
| Identifier | ExFiles\Box 153\1\ scan0112 | |
| Date | 8th January 1937 | |
| LOCKING DEVICE. STEERING BALL PINS F S LW F T W Hd.{Mr Hayward/Mr Huddy} 324 SB{Mr Bull/Mr Bannister} 8.1.37 | ||