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).
List of arguments against a specific filter, noting its cost and performance.
| Identifier | ExFiles\Box 135\3\ scan0055 | |
| Date | 14th October 1932 | |
| -2- Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}8/KT.14.10.32. Against the filter. (1) More costly to fit as it has to be connected up to the clutch pedal. (2) The actual filtering is not as good as the Tecalemit. Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||