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 detailing a camshaft timing diagram and cam profile.
| Identifier | ExFiles\Box 169\4\ img202 | |
| Date | 26th May 1933 guessed | |
| Hs{Lord Ernest Hives - Chair} 632 4 EX 108 1/2° 60° 5° 1 EX L OF KEYWAY IO 1E IC 41L EO 40E EC 9.5L 5 EX 6 IN 3 IN DIRECTION OF ROTATION 5 IN 1 IN 2 EX 4 IN 6 EX 3 EX 2 IN 1.000 CAM FORMS TO OTHER DIMENSIONS CAMSHAFTS - PER | ||