Optical Plummet - Sokkia 130R Series Operator's Manual

27.6

Optical Plummet

PROCEDURE Check
1. Carefully level the SET and
exactly center a surveying point in
the reticle of the optical plummet.
2. Turn the upper part 180
check the position of the surveying
point in the reticle.
If the surveying point is still
centered, no adjustment is
necessary.
If the surveying point is not still
centered in the optical plummet,
adjust as follows:
PROCEDURE Adjustment
3. Correct half the deviation with the
levelling foot screw.
4. Firmly hold down the top portion of
the instrument, and remove the
optical plummet knob cover, then
remove the optical plummet reticle
cover on the inside.
Replace the optical plummet knob
cover.
Use the 4 adjusting screws of the
optical plummet to adjust the
remaining half of the deviation as
show below.
27. CHECKS AND ADJUSTMENTS
°
and
Optical plummet
reticle cover
Optical plummet
knob cover
145