The laser plummet is located in 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, return the instrument to any Leica Geosystems authorized service workshop.
Inspecting 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. Select Settings\TS instrument\Level & compensator to access the Level & Compensator panel. The laser plummet is switched on when the Level & Compensator panel is entered. Adjust the laser plummet intensity.
☞ 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 3mm at a height of 1.5m.
5. 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 centre. Depending on brightness and surface, the diameter of the laser dot can vary. At 1.5 m, it is about 2.5 mm.