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 drawing of a connecting rod with dimensions.
| Identifier | ExFiles\Box 23\5\ Scan018 | |
| Date | 23th December 1927 guessed | |
| .450 DIA., .900, 1.375, 1.175, 9.225, .750, 1.400, 1.250, 2.625, 1.360, 1.200, 2.375 DIA., 3.125 DIA., .200, .950, .875 DIA., 1.550 DIA. | ||