| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously form a plurality of datum planes by making an inclined datum line obtainable without tilting a laser light projector. SOLUTION: A plurality of datum planes is formed simultaneously by forming a plurality of laser-beam datum planes by emitting a plurality of laser beams 36 in a state where the laser beams are separated in the vertical direction and, at the same time, rotationally projecting the laser beams 36. Therefore, works can be carried out simultaneously at an executing position and, in addition, a desired inclined datum line can be obtained immediately without performing any datum plane inclining and setting operations.
|
