Operation Manual

ManualsBrandsMetabo ManualsLaser and Optical LevelsLaser level

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 KLL 2-20 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  rst wall (step 3 / point 1 ).

The following applies for the di erences :

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 pre x !

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

S Maximum

permissible

di erence

5 m 3,0 mm

10 m 6,0 mm

15 m 9,0 mm

20 m 12,0 mm

S Maximum

permissible

di erence

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 di erence

must not be greater than :