Diagram of timing for a Watford E06 Sleeve Magneto No 73972 and its distributor.
| Identifier | ExFiles\Box 65\1\ scan0139 | |
| Date | 25th March 1926 | |
| MA = MAKE ADVANCE = 87° MR = MAKE RETARD = -25° X8695 B.A = BREAK ADVANCE = 64° B.R = BREAK RETARD = 125° B.R. B.A. FLUX AXIS. RETARDED FLUX AXIS ADVANCED S/L M.R M.A. A R 103° 86° 65° 22° 22° 41° DIAGRAM OF TIMING OF WATFORD E06 SLEEVE MAGNETO No 73972 AND ITS DISTRIBUTOR. H.E.W 25-3-26 | ||
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).