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 of a piston with external and cross-section views.
| Identifier | ExFiles\Box 179\3\ img003 | |
| Date | 29th February 1940 guessed | |
| SCALE ¹/₁ SECTION 'AA{D. Abbot-Anderson}' 2.544" DIA A .100" .125" .074" .7500" B. .075" DIA .7085 DIA CHR·812 DIA AT 60° .240" 2.350" DIA. .750" .675" 2.950" 3.100" | ||