Device for measuring and marking space points along horizontally running contour lines

摘要

The invention relates to a construction surveying device (10) for measuring and marking space points in buildings, having a base (11), an upper part (12) which is mounted on the base in such a manner that said part can be rotated about an axis of rotation, a sighting unit (13) having a laser source which is designed to emit a laser beam (14) and a laser light detector, and an evaluation and control unit (20). In this case, a first rotary drive and a second rotary drive enable the upper part and the sighting unit to be driven and aligned, a spatial alignment of the sighting unit with respect to the base can be detected using two goniometers, and coordinates for space points can be determined using the evaluation and control unit. According to the invention, the construction surveying device (10) has a horizontal line projection functionality which, at least sometimes, takes place automatically after triggering and is intended to measure and mark space points (1a, 1b, 1c) along a horizontal line (15), running in a horizontal plane (16), on an arbitrarily shaped surface.