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AutoCross Laser ACL 2
Preparing the calibration check:
It is possible for you to check the calibration of the laser.
To do this, position the device midway between 2 walls,
which must be at least 5 metres apart. Switch the device
on (indicator lamp 11 off). The best calibration results
are achieved if the device is mounted on a tripod.
1. Mark point A1 on the wall.
2. Turn the device through 180° and mark point A2.
You now have a horizontal reference between points
A1 and A2.
1.
A
1
2.
Performing the calibration check:
3. Position the device as near as possible to the wall at
the height of point A1. Now adjust the device.
4. Turn the device through 180° and mark point A3.
The difference between points A2 and A3 is the
tolerance.
3.
A
1
4.
Note: If points A2 and A3 are more than 3 mm / 10 m
apart on either, the device is in need of calibration.
Contact your authorised dealer or else the UMAREX-
LASERLINER Service Department.
Testing accuracy of vertical line
Set up instrument about 5 m from a wall. Fix a plumb line
of 2.5 m length to the wall, using a plumb bob. Press
button V1 or V2 and bring laser line into coincidence with
the plumb line. Deviation between laser line and plummet
cord from top to bottom must not exceed ±1.5 mm.
Testing accuracy of horizontal line
Set up instrument about 5 m from a wall. Press buttons H
and V1. Mark laser cross on wall. Turn instrument until the
laser cross has moved about 2.5 m to the left side and
check if horizontal line is within
± 2 mm of laser cross marked
on wall. Repeat measurement
by turning instrument to the
right side.
12
ENGLISH
A
2
A
3
2,5 m
B
A
2
A
2
A
2
A
3
C
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