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).
Blueprint of a Sump Oil Filter, showing various sections and components.
| Identifier | ExFiles\Box 135\3\ scan0029 | |
| Date | 21th January 1931 guessed | |
| METAFILTERS (1929) LTD., DRG. Nọ 4/349/, SUBJECT:- SUMP OIL FILTER, SCALE = 3/4 FULL SIZE, METAFILTER, TYPE 0.349, INLET, OUTLET, SLUDGE, SECTION ON "AA{D. Abbot-Anderson}", COVER HALF SECTION THRO' "BB", BODY HALF SECTION THRO' "CC", (0.39), (0.44), (0.26), (0.43), (0.33), (0.34), (0.32), (0.35), (0.36), (0.37), (0.28), (0.31), (0.38), (0.8) | ||