It was created by law number 82, of 31 March[citation needed] 1928, combining Generalstabens Topografiske Afdeling and Den danske Gradmaaling, two institutions that did somewhat overlapping cartographic and topographic mapping of Denmark.
[1] In the years 1940–1953 Geodætisk Institut made the second nationwide precision landscape levelling of Denmark.
The height fix point remains Århus Domkirke (Dansk Normal Nul (DNN)), as established in 1905.
Geodætisk Institut made the third topographic mapping of Denmark in the years 1966–1987, based on aerial photography (First 1842–1887, second 1887–1938).
[1] In 1989, Geodætisk Institut was combined with Matrikeldirektoratet and Søkortarkivet, to form Kort & Matrikelstyrelsen (now Geodatastyrelsen).