Blueprint of two throttle flange joints for 4¼ and 3½ litre engines.
| Identifier | ExFiles\Box 103\5\ scan0195 | |
| Date | 22th May 1937 guessed | |
| 4¼ LITRE. 3/8" STUDS & NUTS THESE ENDS ARE SQUASHED IN. 3½ LITRE. 5/16" STUDS & NUTS. THROTTLE FLANGE JOINT. | ||
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).