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

3D Collection – a Target Marker for the Construction of the Simplon Tunnel

This target marker was added to the collection of scientific instruments and teaching aids together with around 320 other surveying instruments from the Institute of Geodesy and Photogrammetry. It was used for surveying work during the construction of the Simplon Tunnel. The Simplon Tunnel The … Read more

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

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

Sammlung 3D – ein Zürcher Vermessungskompass

Dieser Vermessungskompass, der auch dioptrische Prismenbussole genannt wird, kam 2020 mit rund 320 Vermessungsinstrumenten aus dem Institut für Geodäsie und Photogrammetrie in die Sammlung wissenschaftlicher Instrumente und Lehrmittel. Dioptrische Prismenbussole Die dioptrische Prismenbussole ist eine besondere Ausführung eines Kompasses, der ohne sichtbare Kompassnadel auskommt. Stattdessen richtet sich das … Read more