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Note:
Be careful when adjusting the three screws, and the tightening
tension is identical for them.
5.3 The Optical Sight
1) Check
1. Mount the instrument on a tripod and fix it.
2. Set a cross mark target which apart from
the instrument about 50m.
3. Take the telescope sight the cross mark.
4.
Observe
the
optical
sight
collimator
whether
collimating
the
cross
mark,
if
collimate
the
mark,
adjustment
is
not
necessary; if not, adjust it.
2) Adjustment
1. Mount the instrument at the tripod and fix it.
2. Set a cross mark target which apart from the instrument about 50m.
3. Take the telescope sight the cross mark.
4. Loosen two fixing screws, adjust the collimator, then fix the two screws
again.
5.4 Laser Plummet
5.4.2 Laser Plummet
1)Check
1. Set the instrument on the tripod, and place a piece of
white paper with a cross drawn on it right under the
instrument.
2. Move the paper so that the intersecting point of the
cross comes to the centre of the laser mark.
3. Rotate the instrument around the vertical axis, and
observe
the
centre
mark
position
against
the
intersecting point of the cross at each 90° rotation.
4.
If
the
laser
mark
always
coincides
with
the
intersecting point, no adjustment is necessary.
