Accurate measurement of the terrain is vital for major projects such as tunnel building. Using the triangulation method, surveyors were able to determine the route of the Gotthard railway tunnel with such precision that the two shafts met on 28 February 1880 with a horizontal discrepancy of just 33 cm. Electronic tools such as GPS and aerial and satellite photography source material have dramatically changed the surveyor’s job. This is reflected in the job title “geomatics technician” used today
(Picture: “Engineers in the mountains” by Raphael Ritz, 1881, Kunsthaus Zürich, held by the Swiss Alpine Museum, Berne)


Take your smartphone with you to the Swiss Museum of Transport and put your talents to the test! Call up the Internet link
and away you go!