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Since the end of the war, the electronic methods for measuring distances have made considerable progress and very remarkable new possibilities in the field of surveying techniques have been found. Means originally serving war purposes only have been adapted to civilian and economic use by con tinued development of methods and equipment. After a survey on the conventional methods of triangulation applied in Germany and the United States and after a brief discussion of modern base measuring by means of the intcrference method according to Vais?la and the geodimeter according to Bergstrand, the...