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).
Communication regarding a silencer with non-standard filter elements and an experimental replacement.
| Identifier | ExFiles\Box 152\3\ scan0266 | |
| Date | 4th October 1938 guessed | |
| CONTINUATION ............ 1 We now find that the silencer which we have here as pattern, and which, incidentally is being returned to you tonight, is fitted with a non-standard filter elements. We are accordingly sending this experimental silencer out without filters which we trust meets with your approval. | ||