Johnson GreenBrite 3x360 Plane Laser Mode D'emploi page 16

3. When using the vertical (plumb)
laser beam, rotate the unit to the
desired position. Use the Fine-tuning
adjustment knob to make small
adjustments. (Figure 18)
4. Slide the locking compensator to the
right to the locked (OFF)
to power off the unit. (Figure 19)
16
position
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Figure 18
Figure 19