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 drawing with dimensions for an Alfa-Romeo valve.
| Identifier | ExFiles\Box 124\5\ scan0059 | |
| Date | 29th February 1932 | |
| WEIGHT OF VALVE COMPLETE, WITH INNER AND OUTER TOP, WASHERS = .2320 LBS, 2.600", 1.150 DIA, 30°, .314" DIA, .040", .225", .650", 1.280" DIA., 1.280" DIA., .12", .297" DIA, 12°, .3125 RAD., 1.675, .125, 3.800", THD. 8m/m x 1m/m R.H, CUT IN HEAD .062" WIDE, x .750 RAD. x .080" DEEP, SCALE 1/1, VALVE: ALFA-ROMEO, ROLLS-ROYCE LTD., PRINT ROOM, 29 FEB 1932, F.F. 7. | ||