Leica Builder Series User Manual page 190

Builder, Check & Adjust
3. Level up the instrument with the electronic level. Refer to "5.2 Instrument Setup"
for more information.

Inspection of the laser plummet should be carried out on a bright, smooth
and horizontal surface, such like a sheet of paper.
4. Mark the centre of the red dot on the ground (2).
5. Slowly turn the instrument through 360°, carefully observing the movement of
the red laser dot (3).

The maximum diameter of the circular movement described by the centre
of the laser point should not exceed 3 mm at a distance of 1.5 m.
6. If the centre of the laser dot describes a perceptible circular movement or moves
more than 3 mm away from the point which was first marked, an adjustment may
be required. Inform your nearest Leica Geosystems authorized service workshop.
Depending on brightness and surface, the diameter of the laser dot can vary. At
a distance of 1.5 m it is about 2.5 mm.
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