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 an oil filter and non-return valve type lubricator for a 20HP rear axle.
| Identifier | ExFiles\Box 51\3\ Scan146 | |
| Date | 10th June 1929 | |
| GL {G. Linnett} 329 DIMENSIONS OF HEXAGON .694 CORNERS .601 FLATS G5306B S/M SCREEN .375 DIA 20 T.P.I.R.H G53802 .200 .300 .625 OIL FILTER & NON-RETURN VALVE TYPE LUBRICATOR 20HP REAR AXLE SEC G120 SCALE 1/1 & 2/1 PRINT ROOM 10 JUN 1929 DERBY. | ||