SHANGHAI ESURVEY GNSS CO., LTD.
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3. Optional: To adjust the lightness of the laser plummet, press ▲ / ▼.
4. Loosen the center screw of the tripod, move the base plate on the tripod head until
the laser spot coincides with the mark point on ground, and tighten the center
screw.
3.3 Do Levelling-up
3.3.1 Do Basic Levelling-up
It is used to do basic levelling-up with the circular level.
To do basic levelling-up with the circular level, do the following:
1. Move screws A and B in the opposite direction until the circular bubble is
perpendicular to a line shaped with screw A and B.
The direction of your left thumb indicates the movement of the circular bubble.
2. Move the bubble to the center of the circle by turning screw C.
3.3.2 Do Accurate Levelling-up
To do accurate levelling-up, do one of the following:
Do Accurate Levelling-up with the Tubular Level
Do Accurate Levelling-up with the Electronic Level on the Screen
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