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 a suction piston for a 20/25 carburettor.
| Identifier | ExFiles\Box 102\1\ scan0249 | |
| Date | 1st February 1935 guessed | |
| Hs.{Lord Ernest Hives - Chair}1725 2. TOP LANDS 2.622 DIA. -7/8 2.619 DIA. -1/2 2. BOTTOM LANDS SUCTION PISTON. 20/25 CARB H.J.S. | ||