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).
Comparative figure table of measurements for the Phantom III and 25/30 HP models.
| Identifier | ExFiles\Box 153\1\ scan0006 | |
| Date | 11th August 1937 guessed | |
| COMPARATIVE FIG: PHANTOM III. Top Heading: 0 Column Headers: Maker, 360, 270, 225, 180, 135, 90°, 45°, 45, 90, 135, 180, 225, 270, 360 Row 'Fellows (16 Cutter)': -.010, -.005, -.002, -.001, 0, 0, 0, 0, 0, -.001, -.0015, -.0025, -.005, -.010 Row 'Fellows (17 Cutter.)': -.018, -.012, -.010, -.007, -.005, -.002, -.001, -.001, -.0015, -.004, -.007, -.010, -.012, -.018 Row 'Adamant.': -.018, -.010, -.0065, -.005, -.0025, -.0015, -.0005, -.0005, -.0015, -.003, -.004, -.0065, -.010, -.0175 25/30.HP. Column Headers: Maker, 360, 270, 225, 180, 135, 90, 45, 45, 90, 135, 180, 225, 270, 360 Row 'Fellows.': -.008, -.003, -.001, +.0005, +.001, +.001, +.0005, +.0005, +.0015, +.002, -.0015, -.0015, -.0025, -.008 Row 'Adamant.': -.011, -.007, -.005, -.0025, -.0025, -.0005, +.0005, +.0005, 0, -.0025, -.0045, -.005, -.0065, -.011 | ||