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).
Distributor dimensions for a Watford E06d Magneto No. 73972.
| Identifier | ExFiles\Box 48\2\ Scan435 | |
| Date | 17th March 1926 | |
| E.F.C. 17.3.26. WATFORD E06d MAGNETO No.73972. DISTRIBUTOR DIMENSIONS. Pitch = 1.26" Range = 62° Make ratio = .85 Forward overlap at advance = .08" " " " retard = .52" Backward " " advance = .63" " " " retard = .17" ________ EFC {E. Fowler Clarke - Electrical Engineer} /H.E.West. | ||