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).
Graph plotting gas flow through an Oldsmobile extractor breather against speed under three different inlet conditions.
| Identifier | ExFiles\Box 132\3\ scan0112 | |
| Date | 10th August 1938 | |
| OLDSMOBILE GAS FLOW THROUGH EXTRACTOR BREATHER WITH METER FITTED TO EXTRACTOR (INLET BLANKED) (STANDARD) (OPEN INLET) CUBIC FEET/HR TOP GEAR M.P.H. WB{Mr Brazier/Mr Bell} | ||