| 摘要 |
PROBLEM TO BE SOLVED: To provide a cheap laser level which public can use. SOLUTION: Laser level which is disposable on a reference surface comprises a housing, a pendulum rotatably connected in the housing, a first laser diode arranged on the pendulum and ejecting the first laser beam along the first path, and a lens arranged on the pendulum on the first path and converting the first laser beam to the first plane beam forming a line on the reference surface. COPYRIGHT: (C)2004,JPO
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