another problem was the lack of standard units of measurement. at that time there were miles ("meilen") of various length even within the electorate. to achieve standardization, the electoral saxon post mile was therefore introduced on 17 march 1722, whereby 1 mile = 2 leagues = 2,000 dresden rods = 9,062 kilometres. to indicate distances on the mileposts, zürner used the league ("wegstunde"), which equalled a half mile.