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).
The required 30° range for Watford I.S.12 magnetos.
| Identifier | ExFiles\Box 43\4\ Scan163 | |
| Date | 19th April 1929 | |
| Mr. Wilkins, A.I.D. c. EFC. c. Hs.{Lord Ernest Hives - Chair} c. Roy{Sir Henry Royce}/Dm.{D. Munro} c. Hs{Lord Ernest Hives - Chair}/CBP. c. Mr. Amey, A.I.D. X4021 Rg{Mr Rowledge}4/LW.19. 4. 29 WATFORD I.S.12 MAGNETOS 83132/3. Referring to your note, W/HB{C. E. Harcombe}/E9, dated April 17th, in connection with the above magnetos, it is essential that these should have the 30° range. Rg.{Mr Rowledge} | ||