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22. CHECKS AND ADJUSTMENTS
G
• Be careful that the tightening tension is identical for all the adjusting screws.
• Also, do not over-tighten the adjusting screws as this may damage the circular level.
PROCEDURE Checking
1. Carefully level the FX and center a survey point
precisely in the reticle of the optical plummet.
2. Turn the upper part through 180° and check the
position of the survey point in the reticle.
If the surveying point is still centered, no
adjustment is necessary.
If the survey point is no longer centered in the
optical plummet, perform the following adjustment.
PROCEDURE Adjustment
3. Correct half the deviation with the levelling foot
screw.
4. Remove the optical plummet reticle cover.
22.5
Optical Plummet