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).
Comparison of particulars for Marston's Special Matrix and an American Harrison Vee product.
| Identifier | ExFiles\Box 88\3\ scan0159 | |
| Date | 4th April 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/Std.3/KW.4.4.35. Comparison of Matrix Particulars. | Matrix | Weight lbs. | Frontal Area Sq.ins. | Depth ins. | Vol. cu.ins. | Wt. )Unit Lbs.)Vol. cu.ins. | |------------------------------------|-------------|----------------------|------------|--------------|-----------------------------| | Marston's Latest Special Matrix | 33.25 | 470.0 | 2.285 | 1073.0 | .0310 | | American Latest Product Harrison Vee. | 26.00 | 470.0 | 2.060 | 969.0 | .0269. | | ||