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4. Preparations before measurements
4.1 Unpacking and storing instruments
Unpacking
Lay down the box gently with the top side facing up. Open
the lock and take out the instrument.
Storage
Cover the telescope cover. Make sure that the vertical
clamping screw and the level bubble face upwards. Lay down
the instrument into the box (with objective lens of the telescope
facing downwards.). Tighten the vertical clamping screw gently
and cover the box, then Lock the box.
4.2 Set up the instrument
Reference for operation:
Install the instrument onto the tripod gently, then level and
center the instrument to ensure the accuracy of the measurement
result.
4.2.1 Using plummets to center and level (align)
1)
Set up the tripod
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
Make sure that the center of the tripod top is right
above the station;
③
Stamp the tripod on the ground with your feet.
2)
Install the instrument onto the tripod
Mount the instrument on the tripod head. Support it
with one hand, and tighten the centering screw on the