| Magnetic damping swing selfconsistent-leveling technology adopted,quick response. |
| New structure,self-leveling conrrection range,easily to use. |
| Semiconductor laser produced wavelengh 635nm,line clear and bright. |
| Can produce two mutually orthogonal vertical line and one horizontal line,included the down point. |
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New structure\self-leveling conrrection range\easily to use Semiconductor laser produced wavelengh 635nm,line clear &bright |