MARKING STRUCTURE MOUNTED IN GEOMETRICAL CENTER OF LANDS AND/OR BUILT-UP TERRITORY AND COORDINATED WITH LOCAL AND STATE GEODESIC SYSTEMS

摘要

FIELD: land-surveying, particularly means for marking measuring points.;SUBSTANCE: marking structure is formed as tower-type pyramid consisting of three layers. Lower and medium layers are composed of four tubes telescopically connected one to another and having top end diameter lesser than that of bottom end. Upper layer is formed of one central tube. Upper part of central tube is secured to anchoring ring-bolts by tension cables. Anchoring ring-bolts are concreted in ground. Wind rotating weather vane, atmospheric thermometer and atmospheric pressure transducer are installed at central tube top. Atmospheric thermometer may be observed from ground surface. Lower ends of central tube and lower layer tubes are telescopically connected to anchoring ring-bolts concreted into composite concrete panel having sun-clock marking, wherein time is indicated by shadow from central tube top.;EFFECT: widened range of applications.;1 dwg