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 liner to reduce the bore of a vacuum gear change cylinder.
| Identifier | ExFiles\Box 94\2\ scan0327 | |
| Date | 4th November 1939 | |
| LINER TO REDUCE BORE OF VACUUM GEAR CHANGE CYLINDER. SLEEVE SOLID IF ALUM. 3 1/4" BORE SLEEVE LIGHTENED IF IN STEEL OR CAST IRON. F.H. 4/11/39 | ||