Trigonometric point determination
With trigonometric point determination the survey points are determined from the ground and calculated in accordance with the rules of trigonometry. These triangulation points – familiar metal pyramids at lookout points that serve as witnesses to the earliest national survey – are the result of this method.
Federal Office of Topography swisstopo
Division Survey
Seftigenstrasse 264
3084 Wabern
Seftigenstrasse 264
3084 Wabern