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Horizontal checking
1. Horizontal checking - Line level
Two parallel wall surfaces at least 5m /16‘5“ apart are required for the
horizontal check.
1. Place the LAX 300 on a smooth surface or on a tripod at a distance of 50 mm
to 75 mm in front of wall A and with the front side pointing towards the wall
2. Switch the unit on (1b).
3. Mark the position of the visible laser line cross on the wall A (point 1).
4. Turn the complete unit 180° without altering the height of the laser.
5. Mark the position of the visible laser line cross on the wall B (point 2).
6. Now move the unit directly in front of wall B.
7. Set the unit‘s height so that the laser dot‘s height matches that of point 2.
8. Without changing the height of the laser, rotate it 180° to place the beam
near the mark on the first wall (step 3 / point 1 ).
The following applies for the differences :
Δ
ges 1 =
Δ
1 -
Δ
2 < ± 2mm 5/64“
Δ
ges 2 =
Δ
3 -
Δ
2 < ± 2mm 5/64“
When calculating, always take note
of the preceding prefix !
2. Horizontal checking - inclination of the laser line
Check the laser line for inclination and perfectly straight projection
1. Mark three points (1, 2 and 3) on the floor at a distance of 5 m /16’5”
from each other; the points must be in a perfectly straight line.
2. Position the laser at distance S = 5 m / 16‘5“ from the line and exactly
in front of the middle point you marked = position X
3. Switch the unit on.
4. Measure the height of the laser line at the points. Measurements X1 - X3
5. Reposition the instrument.
6. Position the laser at distance S = 5 m / 16‘5“ from the line and exactly in
front of the middle point you marked = position Y
7. Measure the height of the laser line at the points. Measurements Y1-Y3
∆1 = X1 - Y1 ∆2 = X2 - Y2 ∆3 = X3 - Y3
F1
G1
F2
G2
F3
G3
F4
G4
F5
G5
S
Maximum
permissible
difference
5 m
3,0 mm
10 m
6,0 mm
15 m
9,0 mm
20 m
12,0 mm
S
Maximum
permissible
difference
16‘5“
1/8“
32’10” 1/4“
49’3”
3/8“
65’8”
1/2“
Measure the vertical
distance between point 1
and point 3. The difference
must not be greater than :
Summary of Contents for Laser LAX 300
Page 1: ...Laser LAX 300 Operating instructions en...
Page 2: ...1a 1b 2b 2a 3 4 4 5 9 7 8 A1 6...
Page 3: ...S 5m 5m 5m X X1 X2 X3 X X X Y S 5m Y Y3 Y1 Y2...
Page 4: ......
