Method for Comparing a Received Beam Hitting a Laser Receiver with a Rotating Laser Beam

A method for comparing a received beam (24) hitting a laser receiver (12) with a rotating laser beam (22), which is moved about an axis of rotation (21) by a rotary laser (11), wherein the laser receiver (12) comprises an evaluating unit and at least one detection field (25) having a longitudinal direction (28) and a transverse direction (29), characterized by the method steps:

• the rotary laser (11) is arranged on a rotational platform (14) adjusted about a rotational axis (15), wherein the rotational axis (21) of the rotary laser (11) is oriented perpendicular and the rotational axis (15) of the rotational platform (14) is oriented parallel to a gravitational direction (27) of the gravitational field
• the laser receiver (12) is oriented in a transverse arrangement wherein in the transverse arrangement the longitudinal direction (28) of the at least one detection field (25) is oriented perpendicular and the transverse direction (29) of the at least one detection field (25) is oriented parallel to the gravitational direction (27)
• the rotary laser (11) is adjusted on the rotational platform (14) in a rotational direction (16) about the rotational axis (15) at least until the received beam (24) hits the at least one detection field (25) of the laser receiver (12)
• in the longitudinal direction (28) of the at least one detection field (25) and adjustment direction (63;
• 73) of the received beam (24) relative to the laser receiver (12) is determined by the evaluating unit and
• the adjustment direction of the received beam (24) is compared by the evaluating unit (48) with the rotational direction (16) of the rotational platform (14).