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- 12 -
Turn
the
instrument
approximately
90
°
adjust screw C, till the
bubble in the center of
the level.
Screw A
Screw B
Screw C
Repeat above steps until the bubble remains in the center of
the plate level while the instrument is rotated to any position.
5
5
5
5....
Center the surveying point again
Loosen the centering screw slightly. Looking through the
optical plummet eyepiece, slide the instrument over the tripod
head until the surveying point is exactly centered in the reticle.
Re-tighten the centering screw securely.
6
6
6
6....
Check again to make sure the bubble in the plate level is
centered.If not, repeat procedure 4.
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