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 component parts with various dimensions and drilling instructions.
| Identifier | ExFiles\Box 179b\3\ img247 | |
| Date | 12th November 1911 guessed | |
| DRILL .187 DIA +5 .65 .02R .250 DIA LOW UT .187 O.D. PIPE 20 SWG SCREW .375 DIA 20 TPI R.H. E76002 E81472 DRILL .453 DIA E27485 DRILL .265 DIA +5 .075 -10 | ||