geo-FENNEL FKL 55 Mode D'emploi page 26

EN
ACCURACY CHECK
Mark two points A and B which are about 30 m apart.
Set up the laser behind point A, turn it on and let it warm up for about 10 min.
Set the grade to 00,000 %.
Let the laser line go through points A and B and wait until the self-levelling procedure is completed.
Measure the height from the centre of the laser line to points A and B and mark them A1 and B1.
Set up the laser behind point B, let the laser beam go through points A and B and wait until the self-
levelling procedure is completed.
Measure the height from the centre of the laser line to points A and B and mark the A2 and B2.
If (A2 - A1) - (B2 - B1) ≤ 3 mm, the accuracy is okay.
If (A2 - A1) > (B2 - B1), laser line is too high and must be adjusted.
If (A2 - A1) < (B2 - B1), laser line is too low and must be adjusted.
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