The coordinates of the trigonometric points are determined by applying classical triangulation and trilateration measurement methods. Trigonometric networks are divided into four basic and two additional orders, namely: First-order trigonometric network (points are spaced 30km-60km apart); Second-order trigonometric network (15km-25km); Second-order trigonometric network (9km-18km); Third-order trigonometric network (5km-13km); Third-order trigonometric network (3km-7km); and Fourth-order trigonometric network (1km-4km).
The establishment of the trigonometric network on the territory of the Republic of Macedonia was carried out in the period from 1900 to 1928 as part of the single trigonometric network of Macedonia, Montenegro and part of Serbia. The network was leveled using the method of conditional measurements, using an approximate method. Through the trigonometric network, the state reference system based on the non-geocentric Bessel ellipsoid and the Gauss–Krüger projection of meridian zones was practically realized.
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