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).
Gridded table of numerical data and calculations.
| Identifier | ExFiles\Box 168b\2\ img035 | |
| Date | 19th July 1920 guessed | |
| S.O.Z. 7 8 9 3 4 1 1 90/36 | 2 70/36 | 70/36 | 40/36 70/36 | 2 40/36 .0408 | .00318 | .00318 | .00182 .00318 | .00182 20.4 | 15.9 | 15.9 | 9.1 15.9 | 9.1 14 | 2.75 | 2.75 | 4.82 2.75 | 4.82 58 | .470 | .187 | .187 DROP OF .438 FOR 10' LENGTH. | ||