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).
Parts quantity comparison table for the Phantom III and Wraith III models.
| Identifier | ExFiles\Box 8\6\ 06-page29 | |
| Date | 27th May 1938 guessed | |
| -2- P.III. Wraith III. Common to Both. Water Connections. 26 14 3 Oil Fttgs. & Pet. D.Pipe 38 43 5 Oil Filler 11 13 10 Oil Filter 10 16 0 Oil Sump Indicator 44 23 0 Relief Valves 17 14 8 Pressure Oil Filter 19 Oil Temperature Reg. 10 0 0 Wire Fittings 22 5 0 Fan 13 11 1 754 487 87 Rm{William Robotham - Chief Engineer}/Cr.{Mr Cra???ster / Mr Chichester} | ||