Editing Triangulation station (section)

==Use==
Trigonometrical stations form networks of [[triangulation]]. Positions of all land boundaries, roads, railways, bridges and other infrastructure can be accurately located by the network, a task essential to the construction of modern infrastructure. Apart from the known stations set up by government, some temporary trigonometrical stations are set up near construction sites for monitoring the precision and progress of construction.

Some trigonometrical stations use the [[Global Positioning System]] for convenience. Its accuracy factors in ionospheric and tropospheric propagation delay errors.

Although stations are no longer required for many modern surveying purposes, they remain useful to hikers and even [[aviator]]s as navigational aids. Particular small triangles on maps (◬) mark summits, for example.