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).
Graph of valve lift in inches versus crankshaft degrees for a hydraulic tappet to be used on a Cadillac.
| Identifier | ExFiles\Box 173\2\ img149 | |
| Date | 1st March 1934 guessed | |
| TO BE USED ON CADILLAC WITH HYDRAULIC TAPPET VALVE LIFT INS .020 .015 .010 .005 CRANKSHAFT DEGREES 0 10 20 30 40 F.A.O.S., U.S.A. ZUL APE No | ||