Place the instrument approximately 5 m from a wall.
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2.
Switch on the instrument and let it self-level.
3.
Mark the middle of the laser cross.
4.
Turn the horizontal laser line 2.5 m to the left or to the right.
5.
Note the tolerance between the marker and the position of the laser line.
6.
This should be 2 mm in our example.
Vertical laser line
1.
Place the instrument approximately 5 m from a wall.
2.
Place a 2 m long plumb-line against the wall.
3.
Switch on the instrument and let it self-level.
4.
Place the vertical laser line on the plumb-line.
5.
This should be 1.5 mm in our example.
NB: If your instrument does not reach the required tolerance, it should be returned to your service centre or to your reseller for service. Repairs carried
out by unauthorised personnel will automatically invalidate the guarantee.