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).
Complete specification drawing showing two figures of a corrugated strip passing through a series of fins.
| Identifier | ExFiles\Box 140\4\ scan0279 | |
| Date | 22th January 1932 guessed | |
| 373,839 COMPLETE SPECIFICATION 1 SHEET [This Drawing is a reproduction of the Original on a reduced scale] Fig.1. Fig.2. Charles & Read Ltd. Photo Litho. | ||