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shoes are firmly fixed in the ground.
II.
II.
II.
II.
Mount the instrument on the tripod head. Supporting it with
one hand, tighten the centering screw on the bottom of the
unit to make sure it is secured to the tripod.
2.3
2.3
2.3
2.3 Centering
Centering
Centering
Centering and
and
and
and Leve
Leve
Leve
Levelling-Up
lling-Up
lling-Up
lling-Up
1.
1.
1.
1.
Position tripod legs so that the plummet is aimed to the
ground mark point. Turn the focusing ring of the optical
plummet to focus.
2.
2.
2.
2.
Turn three footscrews of the tribrach till the center of reticle
exactly coincides with the surveying point in any position.
3.
3.
3.
3.
Move the tripod legs to centre the circular level. The
instrument is now roughly leveled-up.
4.
4.
4.
4.
Center the bubble in the circular level.
Loosen the horizontal motion
clamp,
and
turn
the
instrument till the plate level
is perpendicular to a line
shaped with screws A and B.
Adjust the screws A and B to
make the bubble in the center
of the level.
Screw B
Screw A
Plate level
Screw C
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