Photograph of an assembled and disassembled spark plug elbow connector.
| Identifier | ExFiles\Box 58\2\ Scan044 | |
| Date | 1st July 1932 guessed | |
| LODGE | ||
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).