(n) :
the official system of weights used in UK between 1856 and 1963. It had been the customary system in London since AD 1300; the official system of weights used in USA between 1866 and 1959
(n) :
the official system of weights used in UK between 1856 and 1963. It had been the customary system in London since AD 1300; the official system of weights used in USA between 1866 and 1959