Diagram of the timing for a Watford E06 Sleeve Magneto No 73972 and its distributor.
| Identifier | ExFiles\Box 48\2\ Scan417 | |
| Date | 23th March 1926 | |
| M.A - MAKE ADVANCE. = - 87° M.R - MAKE RETARD = - 25° B.A - BREAK ADVANCE = 64° B.R = BREAK RETARD = 125° B.R. B.A. FLUX AXIS. RETARDED FLUX AXIS ADVANCED M.R. M.A. 22° DIAGRAM OF TIMING OF WATFORD E06 SLEEVE MAGNETO No 73972 AND ITS DISTRIBUTOR H.S.W 23-3-26 E.7.C. | ||
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).