Thanks to these facilities has been proven that the Earth is not a perfect sphere shape and ellipsoid. Scientists say that, despite the temporary changes in the terrain, the difference between modern and ancient meridian measurements was less than 3.5 cm.
Struve Geodetic Arc is included in the UNESCO World Heritage List. From 265 points remained only 34. On the territory of Belarus is 19 geodetic points - more than in any other country, 6 of them are inscribed on the World Heritage List. At all points installed metal four-sided pyramid, and additional stela-sites (1.5 m high obelisk, topped with a 100-pound «earthly» sphere with Belarus circuit) can be seen in the paragraphs «Chekutsk» geodetic arc, «Lyaskovichi», «Osovnitsa».
