Kern Theodolit, Theodolit, Absteckungs Theodolit

3D Collection – the Surveying Theodolite from Lötschberg Tunnel

The internal surveying of a tunnel is carried out using a surveying theodolite. This theodolite, which is now available as a 3D model, was used for surveying the Lötschberg tunnel.  The triangulation of Lötschberg tunnel was carried out between 25 August and 8 September 1906 … Read more

Triangulations Theodolit, Universalinstrument Von Hildebrand Fre

3D Collection – a Universal Instrument for Land Surveying

Like the T2 universal theodolite and the travel theodolite, this triangulation theodolite also originated from the Institute of Geodesy and Photogrammetry. According to the order book, the Institute – which was still called the Geodetic Institute at the time – purchased it for 1725 in 1902. It is … Read more


3D Collection – a Theodolite by Georg Friedrich Brander

This 18th century theodolite is part of the Observatory Collection. It was created by Rudolf Wolf (1816-1893). He was a professor of astronomy, head of the Semper Observatory, director of the library of the Polytechnic (present-day ETH) and collector of astronomical instruments. He created an … Read more

Orthogonalplanimeter Von Kaspar Wetli (1822 1889), Gefertigt Von

3D Collection – Measuring Areas using the Orthogonal Planimeter

«Probably never before have so many surface areas of flat figures needed to be calculated, while we are occupied with the most detailed land surveys and the most significant road constructions.» Carl Maximilian von Bauernfeind: Die Planimeter von Ernst, Wetli und Hansen, welche den Flächeninhalt … Read more

Reise Theodolit, Universalinstrument Von Billwiller Kradolfer

3D Collection – a Theodolite To Go

A theodolite is used to measure angles, for example in engineering, architecture or surveying. This theodolite is a travel theodolite dating from 1899. Due to its small size and low weight, it was well suited for use on excursions. ETH acquired this theodolite in 1899. … Read more

Heinrich Wild, Theodolit T2, Gerätenummer 353

3D Collection – Wild Heerbrugg’s First Theodolite

This theodolite, called the WILD T2 universal theodolite, was purchased by ETH in 1923. This was also the year in which the Geodetic Institute was officially mentioned for the first time; this happened during the summer semester. However, geodesy and topography had already been taught … Read more