Surveying device with scan functionality and single-point measuring mode

The instrument (1) has a base (10) defining a vertical axis (11). A beam deflector (30) is rotated about a horizontal axis (31) relative to a body (20). A visual field is defined by an imaging system and the deflector and aligned with a measurement axis of the deflector. Distance between a target point and alignment of the measurement axis and a position of the target point are determined in dependence on the distance and orientation of the measurement axis during controlling triggering of single point measurement by a controlling and processing unit. An independent claim is also included for a method for measuring a position determination of a point with a surveying instrument.