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).
Test report on the performance and restriction of different types of Enot's petrol filters.
| Identifier | ExFiles\Box 44\1\ Scan290 | |
| Date | 1st April 1930 | |
| For Files ENOT'S PETROL FILTERS TESTED UNDER 6FT HEAD OF 80/20 PETROL. DIRECT DELIVERY THROUGH PIPE. 330.5 Pts/HR. DELIVERY THROUGH POROUS POT FILTER. 277 Pts/HR. RESTRICTION 16.1% DELIVERY THROUGH STANDARD (DISC FILTER) 250 Pts/HR. RESTRICTION 24.3% S.W.G 212 | ||