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).
Table of dimensions and test results for various engineering components.
| Identifier | ExFiles\Box 124\2\ scan0210 | |
| Date | 10th October 1939 guessed | |
| 2. | Piece No. | Bore | Matl. | Width. | Radial Thickness. | Dimension of "L" Section. | Gap. Open. | Gap. closed. | Tang. Load. | Diam. Load. | Cylinder Wall Pressure. | |-----------------|----------------|------------|--------|-------------------|---------------------------|-----------------------|--------------|-------------|-------------------|-------------------------| | EB.3449 PR.1172 | 3.25 | 1/C SS{S. Smith} 931 | .177" | .112" | .0885 | .378 Min. .432 Max. | .008 | | 10.42 - 14.86 lbs | 27.5 - 39.1 lb. " | | RE.790 PR.1262 | 75 m/m 2.9527" | 1/C 4K6 | .0937 | .102 | | | .008 | | 3.63 - 5.92 lbs | 10 - 16.2 lbs " | | RE.791 PR.1263 | 75 m/m 2.9527 | 1/C 4KC | .0937 | .102 | A.{Mr Adams} .05135 B. .0437 | | .008 | | 2.09 - 3.32 lbs. | 5.6 - 9.1 lbs. " | | RE.789 PR.1264 | 75 m/m 2.9527 | 1/C SS.{S. Smith}931 | .177 | .112 | .0885" | | .008 | | 9.65 - 14 lbs. | 28 - 40.6 lbs " | | ||