Blueprint cross-section of a Standard Drip Plug.
| Identifier | WestWitteringFiles\T\2July1929-December1929\ Scan010 | |
| Date | 13th July 1929 guessed | |
| STANDARD DRIP PLUG. A. {Mr Adams} B. C. D. {John DeLooze - Company Secretary} F. {Mr Friese} H. {Arthur M. Hanbury - Head Complaints} L. O. {Mr Oldham} R. {Sir Henry Royce} | ||
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).