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 Alfa Romeo piston and piston rings.
| Identifier | ExFiles\Box 179\3\ img004 | |
| Date | 29th February 1940 | |
| 4 HOLES .075 DIA .225" 1.50" A 1.030" SEIBS - .110" AT BOTTOM 1X - .050 RAD AT TOP .076" DIA. PISTON. ALFA-ROMEO TA .800" 2.200" DIA 2.425 DIA. 2.555" DIA PISTON RINGS. 2.350 DIA. X .0775 WIDE ROLLS-ROYCE LTD PRINT DEPT 29 FEB 1940 | ||