Those who are allowed to make drawings for the Gotthard line here in the open air in 1875 should themselves lucky! The tunnel workers toiled in the often far too stuffy pits in the north and south. The construction company Favre allows this and numerous other
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