METHOD FOR SHADOW LEVELING

摘要

The invention relates to area of high-accuracy determination of elevation position of objects, in particular with shadow leveling. Method if shadow leveling is in fact that one installs light source in front of controlled object, with projecting position of shadow of object to vertical screen as cut shadow and with determination of position of edge of cut shadow by means of photoelectric indicator that is installed with possibility of displacement in vertical plane parallel to long axis of object. At that origin of vertical displacement of photoelectric indicator is set at level of free surface with known mark of elevation. The invention provides possibility of determination of elevation position of object by position of edge of truncated shadow directly without transfer of mark from nearest reference point, this decreases labor consumption of the method and consumption of materials and time.