Leica FlexLine plus - Inspecting the Laser Plummet of the Instrument

FlexLine plus, Check & Adjust
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14.7 Inspecting the Laser Plummet of the Instrument

The laser plummet is integrated into the vertical axis of the instrument. Under normal
conditions of use, the laser plummet does not need adjusting. If an adjustment is
necessary due to external influences, the instrument has to be returned to a Leica
service department.
Inspect the laser
plummet
step-by-step
1. Set up the instrument on the tripod approximately 1.5 m above the ground and
level up.
2. To activate the laser plummet, turn on the instrument, and, if tilt correction is
set to On, the laser plummet will be activated automatically, and the Level &
Plummet screen appears. Otherwise, press the FNC/Favourites key from within
any program and select Level.

Inspection of the laser plummet should be carried out on a bright,
smooth and horizontal surface, such as a sheet of paper.
3. Mark the centre of the red laser dot on the ground.
4. Turn the instrument slowly through 360°, carefully observing the movement of
the red laser dot.

The maximum diameter of the circular movement described by the centre
of the laser dot should not exceed 3 mm at a height of 1.5 m.
5. If the centre of the laser dot makes a clearly circular movement, or moves more
than 3 mm away from the point which was first marked, an adjustment may be
required. Call your nearest Leica service department.
Depending on brightness and surface type, the size of the laser dot can vary. At
a height of 1.5 m an average diameter of 2.5 mm is estimated.
TSOX_068
3
4
5
360°
3 mm / 1.5 m
Ø 2.5 mm / 1.5
1