Leica Geosystems Leica Line and Dot Lasers - Manual (Page 9)

8 Operation Leica Lino 757665i en
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Checking the accuracy of the Leica
Lino

Check the accuracy of your Leica Lino regu-
larly and particularly before important measuring
tasks.
Checking the accuracy of the levelling
Set the instrument on a tripod half-way between two
walls (A+B) that are approx. 5 m apart.
Place the Lock switch
3 in the "Unlocked" ( )
position.
Direct the instrument at wall A and switch on the
instrument. Activate the horizontal laser line or laser
point and mark the position of the line or the point
on wall A (-> A1).
Rotate the instrument by 180° and mark the hori-
zontal laser line or the laser point in exactly the same
way on wall B (-> B1).
Then place the instrument at the same elevation as
close as possible to wall A and again mark the hori-
zontal laser line or the laser point on wall A (-> A2) .
Rotate the instrument by 180° again and mark the
laser on wall B (-> B2). Measure the distances of the
marked points A1-A2 and B1-B2. Calculate the differ-
ence of the two measurements. If the difference
does not exceed 2 mm, then the Leica Lino is within
tolerance.
| (A1 - A2) - (B1 - B2) |  2 mm
A1 B1
2.5 m 2.5 m
A1
A2
B1
B2
5 m