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).
Example calculation for a Speedometer Magneto Armature.
| Identifier | ExFiles\Box 68\4\ scan0170 | |
| Date | 16th February 1916 | |
| R.R.' 235 A (400 T) (S.C. 536. 16-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1546. 64) Example 3. R.R. Speedometer Magneto Armature. n = 20, p = 2 z = 10, z₁ = 11, z₂ = 9. [Watermark] DICKINSON BOND 1804 MADE AT CROXLEY | ||