What is a trigonometrical station?

A trigonometrical station is a fixed point on the Earth's surface used for triangulation in surveying and geodesy. These stations are equipped with precise instruments to measure angles and distances to other stations, enabling the accurate mapping of the terrain. They are essential for creating topographical maps and for various applications in fields like construction, navigation, and land development. Typically, trigonometrical stations are marked and maintained to ensure their reliability for long-term measurements.