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PART 6 CHECKING AND ADJUSTMENT
The instrument has been checked and adjusted strictly in the factory and can meet the quality
requirement. But the long distance transportation and the change of the environment will have great
influence on internal structure of the instrument. So before using, the instrument should be checked
and adjusted according the items of this section.
24.1 Plate Vial
·
Inspection
Refer to 2. Setting Up the instrument § 2. “
Leveling by using the plate level
”.
·
Adjustment
1. If the bubble of the plate level moves away from center, bring it half way back to the center by
adjusting the leveling foot screw on tribrach, which is parallel to the plate level. Correct the
remaining half by adjusting the screw of plate level with adjusting pin.
2. Confirm whether the bubble is in the center by rotating the instrument 180º
. If not, repeat
Procedure
⑴
.
3. Turn the instrument 90º
and adjust the third foot screw on tribrach to center the bubble in the plate
level.
Repeat inspection and adjustment steps until the bubble remains in center with the plate level in any
direction.
24.2 Circular Level
·
Inspection
No adjustment is necessary if the bubble of the circular level is in the center after inspection and
adjustment of the plate level.
