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English
CHECKING INSTRUMENT BEFORE OPERATION
CHECKING ACCURACY
1. Set two range rods at distance of 5 m.
2. Set the tripod in the center between two rods and place line laser at
the tripod.
3. Turn the device on. Two laser beams will turn on. At the rod A, mark
point that is indicated by laser cross a1. Turn the laser for 180 degrees. At
the rod В mark the point indicated by laser cross Ы.
4. Move the tripod in the way, to place the device at distance of 60 cm from
rod A. Repeat operation and make marks a2 and b2. Measure distance
between points a1 and a2 and between Ы and b2. Accuracy of your laser
device is considered to be within acceptable limit if the difference between
first and second measurements is not more than 1,5 mm.
CALIBRATION OF HORIZONTAL BEAM ACCURACY
1. Set the line laser at distance of approximately 5m from the wall and
mark point A indicated by laser cross.
2. Turn the line laser, move the beam approximately for 2.5m to the left
and check the horizontal laser line to be within 2 mm at the same height
that marked point indicated by the laser cross.
3. Turn the device and mark point В at distance of 5 m from point A.
4. Repeat the same actions moving the laser device to the right.
CALIBRATION OF VERTICAL BEAM ACCURACY
1. Set the laser device at distance of approximately 5m from the wall.
2. Mark point A at the wall.
3. Distance to point A will be 3m.
4. Fix the plumb at the wall 3m long.
5. Turn the plotter and direct vertical laser line to the plumb at the rope.
6. Accuracy of the line is considered sufficient if its deviation from vertical
laser line is no more than 2mm.
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