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Checkout
Put the gray side of the reflector towards the instrument, and
put it 5 meters and 20 meters away. Start laser direction function.
Focus on the reflector center by the telescope crosshair center,
then check the position of the red laser point. Generally speaking,
the telescope is equipped with special filter, human eyes cann′t
see laser point through the telescope, you can see the offset
between the red laser point and the reflector crosshair center, you
can observe this above the telescope or at the side face of reflector.
If laser center coincide with the crosshair center, it indicates that
the adjustment meet required accuracy. If the offset between the
point position and the mark of crosshair is out of limit, will need
to send it to professional department for adjustment.
If the reflector is too bright under the illumination of laser
beams, the grey side can be replaced by the white side.