- open sight alidade
- открытая алидада
Англо-русский строительный словарь. 2013.
open sight alidade
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Theodolite — A theodolite (IPA en|θiːˈɒdəlаɪt) is an instrument for measuring both horizontal and vertical angles, as used in triangulation networks. It is a key tool in surveying and engineering work, particularly on inaccessible grounds, but theodolites… … Wikipedia
Ceiling projector — The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade, usually positioned 1000 ft (304.8 m) away and wherever possible set… … Wikipedia
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Ordnance QF 18 pounder — Australian gun crew in action in the Ypres sector, 28 September 1917 Type Field gun Place& … Wikipedia
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Graphometer — or semicircle is a surveying instrument used for angle measurements. It consists of a semicircular divided into 180 degrees and sometimes subdivided into minutes. The limb is subtended by the diameter with two sights at its ends. In the middle of … Wikipedia
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Triangulation — In trigonometry and geometry, triangulation is the process of determining the location of a point by measuring angles to it from known points at either end of a fixed baseline, rather than measuring distances to the point directly. The point can… … Wikipedia
