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).
Technical drawing of an E.A.C. valve with key dimensions and specifications.
| Identifier | ExFiles\Box 72\1\ scan0185 | |
| Date | 1st May 1924 | |
| E.A.C VALVE X9060 May. 1924. MAX LIFT .4875 WITH .005" TAPPET CLE. 1.750 DIA. 45° FREE AREA 2.156.☐' | ||