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).
Table of revised weights and dimensions for various types of matrices.
| Identifier | ExFiles\Box 105\1\ scan0215 | |
| Date | 16th April 1935 | |
| X 540 Hm{Capt. W. Hallam - Head Repairs}/Std.10/KW.16.4.35. REVISED MATRIX WEIGHTS. Table Headers: Matrix, Weight lbs., Frontal Area sq.ins., Depth ins., Vol. cu.ins., wt. / Unit lbs./ vol. cu.ins. Table Data: Row 1: Bentley old std. Marston Mark III, 38.0, 470, 3.305, 1553, .0245 Row 2: Bentley new std. Marston Mark V.{VIENNA}, 31.5, 470, 2.285, 1073, .0294 Row 3: Central Mounting Wings & Rad. Bentley Rad. Marston Mark V.{VIENNA}, 28.25, 401, 2.285, 916, .0309 Row 4: Std. Shape Bentley, Harrison Vee (U.S.A.), 26.00, 470, 2.060, 969, .0269 Row 5: Std. Shape Bentley, Marston copy of Harrison Vee (U.S.A.), 33.25, 470, 2.285, 1073, .0310 Row 6: Std. 20/25, Marston Mark III, 45.00, 560, 3.305, 1850, .0243. Row 7: 20/25, Std. shape Marston Mark V.{VIENNA}, 35.50, 560, 2.285, 1280, .0278 Row 8: 40/50 - E.85830 (1st type) Harrison Vee (U.S.A.), 48.00, 587, 3.305, 1940, .0248 Row 9: 40/50 Latest type Marston Mark V.{VIENNA}, 58.00, 610, 3.305, 2015, .0288 | ||