In the diploma thesis we checked the preservation rate of the trigonometric networks marks of 1st, 2nd, 3rd and 4th order, as well as of the tie, polygon and photogrammetric control points in the vicinity of city of Ormož. The area under consideration can be described as a rural hilly area dominated by arable land and vineyards. In the selected area, 94 locations were examined, of which 34 (36 %) were found, the rest were destroyed (25 points - 27 %) or not found (35 points - 37 %). Most of the trigonometric points found are stabilised by concrete or granite stones, a few points are marked by church bell towers or chapels. Among the church bell towers or chapels, we found that 55 % (5 out of 9) have been restored since 2006, which means that their coordinates would have to be redefined before being used. The analysis of the found points shows, that the highest number of still preserved points are located along the roads or in urban areas, the smaller number in forested or overgrown areas and in vineyards. In this area there is also the church in Jerusalem, where a trigonometric surveys can be traced back to years 1762–1767, when this location was included in Liesganig's trigonometric survey of the Vienna meridian.
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