Long ton, also known as the imperial ton or displacement ton is the name for the unit called the ton in the avoirdupois or Imperial system of measurements standardised in the thirteenth century that is used in the United Kingdom and several other British Commonwealth of Nations countries alongside the mass-based metric ton invented in 1799.
The author of The House Of Seven Gables is Nathaniel Hawthorne.
Above are the attics, which stretch the whole length of an enormously high pointed roof, with two gables and two large dormer windows on each side of it. But for small gables on the buttresses, it is quite plain up to the level of the roof ridge. Marks can also be seen, in the masonry, which indicate that the building once had three gables. The house was an old one, the gables fronting the street.