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 authorised service workshop.
Inspecting the laser plummet step-by-step
- Place and secure the instrument into the tribrach and onto a tripod.
- Turn on the instrument. Connect the instrument to the field controller. Using the tribrach footscrews, level the instrument with the electronic level.
Electronic level:
• Select Devices from the Home Menu.
• Tap the arrow button to the right of the device name.
• To display the electronic level, tap Compensator.
- The laser plummet is switched on when the Compensator screen is displayed.
➜ Inspection of the laser plummet should be carried out on a bright, smooth and horizontal surface, such as a sheet of paper.
Mark the centre of the red laser dot on the ground. - 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.
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 authorised 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.