Brass theodolite nineteenth

* Theodolite

surveying instrument complemented by an optical instrument, measuring angles in both horizontal and vertical planes to determine a direction. It is used to make measurements of a triangulation measurement of the angles of a triangle. The theodolite is part of the family angle measuring instruments. In astronomy, the theodolite is used to determine the azimuth relative to the celestial pole, and the apparent height of a celestial body with respect to the horizon. Geodesy, it is used to determine the angles formed by three mountain peaks for example. In topography, it is used in the measurements of a raised land (topographic survey). In archeology, during excavations, it is used as a measure of specific relief items, then used in the reconstruction of the site in three dimensions.