trone

{ } n. [ LL. trona, fr. L. trutina a balance; cf. Gr. &unr_;. ] 1. A steelyard. [ Prov. Eng. ] [ 1913 Webster ]

2. A form of weighing machine for heavy wares, consisting of two horizontal bars crossing each other, beaked at the extremities, and supported by a wooden pillar. It is now mostly disused. [ Scot. ] Jamieson. [ 1913 Webster ]

Trone stone, a weight equivalent to nineteen and a half pounds. [ Scot. ] --
Trone weight, a weight formerly used in Scotland, in which a pound varied from 21 to 28 ounces avoirdupois. [ 1913 Webster ]