 Five centuries later, when in 1707 England and Scotland were united into a single kingdom, the Scots agreed to use the same units of measure that were already established in England.During the eighteenth century, in order to facilitate trade, Peter the Great, Czar of Russia adopted the English system of measure.From 1668 to 1776 the French standard of length was the Toise of Châtelet which was fixed outside the Grand Châtelet in Paris.