 Charlemagne brought a consistent system of measures across the entire empire.However, after his death, the empire fragmented and many rulers introduced their own variants of the units of measure.Some of Charlemagne's units of measure, such as the "pied du Roi" (the king's foot) remained virtually unchanged for about a thousand years, while others, such as the "aune" (ell—used to measure cloth) and the "livre" (pound) varied dramatically from locality to locality.