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 showing a cross-section of a piston.
| Identifier | ExFiles\Box 170\1\ img060 | |
| Date | 18th January 1939 guessed | |
| ESTIMATED WEIGHT OF PISTON 13.8 OZS B ALTERATIONS ISSUE DESCRIPTION DATE | ||