Kapro Prolaser 3D All-Lines 883G Manuel D'utilisation page 17

A
a2
X
X
a1
14) Measure the distances:
15) The difference | Δa – Δb| should not be more than 3 mm,
otherwise send the laser level to a qualified technician for
repair.
C
Figure # 4
Δa= |a2-a1|
Δb= |b1-b2|
180°
2m
B
b1
X
b2
X
0.5m
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