The Grossenhainer base line was the base line of the Royal Saxon triangulation from 1862 to 1890. Based on this line, Saxony was covered by a network of triangles and remeasured with angle measurements. Stations of this triangulation can still be found on many hills in Saxony. When choosing the baseline, it was important that it should be as flat and undeveloped as possible, and there is plenty of flat land here. The endpoints of the baseline were in Quersa and Raschütz, at both locations there is still the base house (Quersa) or a replica (Raschütz). The center of the base was exactly in line with the two end points, and is where Grossenhain Airport is today. The baseline provided the scale for the trigonometric mesh. Therefore, an exact measure was needed here. The length of the baseline was determined in a month's work. To do this, the surveyors used measuring rods four meters long, which were lined up exactly horizontally and aligned. It went once in one direction and back again to check. The result: 8,908.647 meters.