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4.2 Leveling with the Circular level
After [4.1 Setting up the instrument] is completed,instrument must be
leveled using the circular vial.
By 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.)
Adjust 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.
1
2
(A) (B)