Abstract: A method for displaying objects and object data of a design plan on a boundary surface of a room is disclosed. In a first step, a design plan of the room is selected and loaded into a control device. In a second step, the current display field of a display device is determined. In a third step, the current display field of the display device is compared on the boundary surface against the design plan, and the objects of the design plan lying in the current display field are determined. In a fourth step, projection parameters suitable for the objects lying in the current display field are determined and transmitted to the display device. In a fifth step, the objects lying in the current display field are projected by the display device on the boundary surface.

Abstract: A method for determining the position coordinates of a target object in a measurement field in at least two dimensions is disclosed. In a first step, a target device is positioned with a reflector element on the target object and a first basic distance between a first and a second laser distance measuring device is determined. In a second step, a first distance from the first laser distance measuring device to the target object and a second distance from the second laser distance measuring device to the target object are determined by laser distance measurement by the laser distance measuring devices. In a third step, the position coordinates of the target object are calculated from the distances by a control device.

Abstract: A measuring device, having: a housing; a distance measuring unit situated in the housing uses an optical measuring beam, with the aid of which the distance between a reference point and at least one measuring point on a target object is measurable without contact; a photoelectric image acquisition unit situated in the housing having a viewfinder and camera lens situated in the housing as well as an image path connecting them for detecting target points of the target object, an image processing unit and a control and computation unit with the aid of which the image of the image processing unit is displayable. The image processing unit defines target points pixels in exactly one single photoelectric image, the control and computation unit allocating the distance of the reference point to the measuring point to at least one of the pixels, the allocation available for further processing.