Patent ID: 9222772
Filing Date: 2015-12-29
Classification: G01B,G01C,G01J,G08B,H03F

Abstract:
1. A method of operating a rotary laser level, the method comprising: actuating a drive system to level a laser assembly of a base unit of the rotary laser level; emitting a laser beam from the rotating laser assembly after the laser assembly has been leveled; detecting a first beam center position of the emitted laser beam using a portable receiving unit; determining an initial level position for the laser assembly at the first beam center position; fixing the receiving unit at the first beam center position; rotating the base unit so the laser assembly is pointing away from the receiving unit; actuating the drive system to level the laser assembly after the base unit has been rotated; actuating the drive system to moved the laser assembly until the laser beam is centered on the receiving unit; determining a current level position of the laser assembly after the laser beam has been centered on the receiving unit; comparing the current level position to the initial level position; and determining a state of calibration of a level position of the laser assembly based on the comparison.