Method and system for automatically levelling dropped ceilings, floating floors, pipes or cable trays

A levelling system for leveling an anchoring system for a dropped ceiling, the levelling system comprising:

• a laser receiver (18), which comprises an outer shell with a top surface for placement against a support frame of the anchoring system and an optical window (19) along one side of the outer shell to receive a laser beam (20) emitted by a laser level (17) that is separate and spaced from the laser receiver (18), the laser receiver (18) having a reference position (21) and being configured to assume at least two height states indicating that a receiving position of the laser beam (20) is higher and lower, respectively, than the reference position (21) of the laser receiver (18) for guiding adjustment of the support frame, the laser receiver (18) comprising interface means (24) to turn the at least two height states into two respective control signals and wireless transmitter means (25) to transmit the two control signals;
• and an electric screwdriver (26) that is separate and spaced apart from each of the laser receiver and the laser level to allow independent placement and movement of the electric screwdriver relative to both the later level (17) and the laser receiver (18), the electric screwdriver being configured to rotate an adjustment screw (10) that is part of the anchoring system for adjusting a position of the support frame, the electric screwdriver comprising a wireless receiver means (31) to receive the two control signals from the laser receiver (18) and switching means (32), which are configured to switch a rotation of the electric screwdriver between one direction and the opposite direction based on which one of the two control signals is received.