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 tube insert for an Armstrong Damper Casing.
| Identifier | ExFiles\Box 152\1\ scan0310 | |
| Date | 8th May 1932 | |
| File Tube Insert of Armstrong Damper Casing The ARMSTRONG'S PATENTS Co Ltd .375 DIA .250 DIA 6.875 M/S Res 8-5.32 | ||