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24. CHECKS AND ADJUSTMENTS
3. First confirm the off-center direction.
Use the adjusting pin to loosen the circular level
adjustment screw on the side opposite to the
direction the bubble is displaced to move the
bubble to the center.
4. Adjust the adjusting screws until the tightening
tension of the three screws is the same to align
the bubble in the middle of the circle.
If the tilt angle shown on the display shifts from tilt angle 0° (zero point), the instrument is not correctly
levelled. This will adversely affect angle measurement.
Perform the following procedure to cancel the tilt zero point error.
PROCEDURE Checking and adjusting
1. Carefully level the instrument. If necessary,
repeat the procedures to check and adjust the
bubble levels.
2. Select "Inst. cons." in <Configuration>
24.2 Tilt Sensor
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