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 showing a modified S.S. tube setting with dimensional annotations.
| Identifier | ExFiles\Box 65a\3\ scan0098 | |
| Date | 12th August 1929 guessed | |
| 2.338 REAR 2.255 FRONT MODIFIED S.S. TUBE SETTING P N a INCREASE WIDTH OF END PIECE .062" AT EACH END OF TUBE F79861 | ||