Aegerter came from the Emmental. He trained as a engineering draftsman in Bern. From 1897 to 1935 he made numerous cartographic mountain photographs of the Austrian Alps and the Dolomites for the German and Austrian Alpine Association. In addition, he produced a series of alpine reliefs. He was a great advocate of the exaggeration of landscape reliefs. After 1945 he worked for the Swiss Land Survey.

Relief models made by Aegerter (details on Swiss Relief Catalogue)

• Höfats (Allgäu), 1:25,000, 1905
• Dachstein, 1:5,000, 1921
• Glärnisch, 1:10,000, 1933

[1] This article bases on Mair, Toni. Grieder, Susanne. Das Landschaftsrelief – Symbiose von Wissenschaft und Kunsthandwerk. Mit Schweizer Reliefkatalog. Verlag hier+jetzt. Baden, Schweiz. 2006. S.154

See also: Historisches Lexikon der Schweiz. Leo Aegerter. 2001.