A German geographic mile (geographische Meile) is defined as 1/15 equatorial degrees, equal to 7420.54 m_ A common German mile, land mile, or post mile (Gemeine deutsche Meile, Landmeile, Postmeile) was defined in various ways at different places and different times. After the introduction of the metric system in the 19th century the Landmeile was generally fixed at 7500 m (the Reichsmeile), but before then there were many local and regional variants.