Blueprint detailing different test designs for a fabric coupling.
| Identifier | ExFiles\Box 15\4\ Scan054 | |
| Date | 21th July 1929 | |
| FABRIC COUPLING TESTS. ① G 73570 ③ EXPERIMENTAL SHOULDER RIVETS ② SCREWS TO G 77763 A. {Mr Adams} SHOULD BE SPIGOTED (AS A) 21. 7. 29 | ||
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).