Sokkia 30R Series Operator's Manual page 36

7. SETTING UP THE INSTRUMENT
7. Center the SET over the
Surveying point
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.
Retighten the centering screw
securely.
8. Check again to make sure the
bubble in the plate level is
centered
If not, repeat the procedure starting
from step 3.
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