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 detailing a modified gudgeon pin location for a 20/25 piston.
| Identifier | ExFiles\Box 86\2\ scan0005 | |
| Date | 8th March 1933 | |
| Ex10704 Ex10695 SPHL. ENDED Ex10703 FLAT ENDED Ex10696 Ex10694 MODIFIED GUDGEON PIN LOCATION - 20/25 PISTON ROLLS-ROYCE, LTD PRINT ROOM MAR 8 1933 DERBY. | ||