4.2 Leveling with the Circular level
After [4.1 Setting up the instrument] is completed, instrument must be leveled using the circular vial.
1By rotating any two leveling screws, position the bubble in the center of the vial (See A.) (To adjust the screws at the same time, turn them in opposite directions.)
2Adjust the remaining leveling screw, and position the bubble in the center of the circle (See B)
For the relation between the screw adjusting direction and bubble moving direction, refer to the arrows of the following figures. Bubble will move to the right in figure A, while in figure B it moves upward.
(A)(B)
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