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).
Hand-drawn sketches detailing the finished and unfinished sections of a bevel wheel and a cross-section showing machining details.
| Identifier | ExFiles\Box 49\1\ Scan094 | |
| Date | 26th August 1919 | |
| SKETCH #1 hole in bevel wheel A Finished (ground) section Unfinished section .0015 below radius of finished section SKETCH #2 .060" Full line according to drawing. Dotted line shows actual condition of pinions. After chamfer is cut very little of straight-portion remains. (HR) 8/26/19 | ||