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).
Specification table detailing component weights for the Marston Mark VI.
| Identifier | ExFiles\Box 150\3\ scan0046 | |
| Date | 16th September 1936 guessed | |
| MARSTON MARK VI DIMENSIONS+ 27.11/16" x 22½" x 84 m.m. | DIMENSIONS | .006 waterways .004 airway | .005 waterways .004 airways | .006 waterways .003 airways | .005 .003 | |---|---|---|---|---| | | Weights of tinned or untinned copper. | | | | | Waterways | 15½ lbs | 13¾ lbs | 15½ lbs | 13¾ lbs | | Airways | 21½ lbs | 21½ lbs | 16¼ lbs | 16¼ lbs | | Total weight of copper strip | 37 lbs | 35¼ lbs | 31¾ lbs | 30 lbs | | Side Plates | 2¾ lbs | 2¾ lbs | 2¾ lbs | 2¾ lbs | | Average weight after dipping | 51 lbs | 49¼ lbs | 45¾ lbs | 44 lbs | | Average weight of solder picked up | 11¼ lbs | 11¼ lbs | 11¼ lbs | 11¼ lbs | | Estimated weight after dipping less side plates & solder (less 3½ lbs) | 47½ lbs | 45¾ lbs | 42¼ lbs | 40½ lbs | | Average weight of completed core (to nearest pound) | 52 lbs | 50 lbs | 47 lbs | 45 lbs | Tinned copper strip does not exceed the untinned strip by more than 0.5% by weight. The copper strip itself varies in weight 5% The weights of cores therefore made from either tinned or untinned strip are sensibly the same. | ||