5 Check and adjustment
5.1 Circular level
1)Turning the leveling foot screw (7) until the bubble be central.
2)Rotate the instrument 180° ( Fig.5.1 ).
Fig.5.1
3)Compensate for half of the shift by adjusting the leveling foot screws (7)
( Fig.5.2 ).
4)Eliminate the remaining half shift by using the hexagonal wrench to adjust
the circular level adjusting screws (5) ( Fig.5.3 ).
Fig.5.2 Fig.5.3
It expresses normal if the bubble is in the
center. If off center, adjusting as follows.