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 modified L.S.C. Choke for the China Engine.
| Identifier | ExFiles\Box 102\1\ scan0013 | |
| Date | 31th October 1929 | |
| V730 .340 QTR. .360 RAD .850 DIA. ±5 .453 DIA. ±2 FOR ALL OTHER DIMENSIONS SEE E51761. MODIFIED L.S.C. CHOKE (CHINA ENGINE) SCALE ½. W.R.P 31-10-29 | ||