Bosch GCL 2-50 - Инструкция по эксплуатации - Страница 19

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19

– Turn the measuring tool 180° without adjusting the

height. Aim it at wall A such that the vertical laser line runs
through the already marked point 

Ⅰ

. Allow the measuring

tool to level in and mark the point where the laser lines
cross on wall A (point 

Ⅲ

).

– The discrepancy 

d

 between the two marked points 

Ⅰ

 and

Ⅲ

 on wall A reveals the actual height deviation of the

measuring tool.

The maximum permitted deviation on the measuring dis-
tance of 2 × 

5

 m = 

10

 m is as follows: 

10

 m × ±

0.3

 mm/m = ±

3

 mm. The discrepancy 

d

 between

points 

Ⅰ

 and 

Ⅲ

 must therefore amount to no more than

3

 mm.

Checking the Level Accuracy of the Horizontal Line

For this check, you will need a free area of 5 × 

5

 m.

– Mount the measuring tool in the middle between walls A

and B on a tripod, or place it on a firm, level surface.
Switch on the measuring tool and select horizontal opera-
tion. Allow the measuring tool to level in.

2,5 m

5,0 m

A

B

– At a distance of 2.5 m from the measuring tool, mark the

centre of the laser line on both walls (point 

Ⅰ

 on wall A and

point 

Ⅱ

 on wall B).

2,5 m

d

5,0 m

2,5 

m

5,0 m

0 m

A

B

– Set up the measuring tool at a 5 m distance and rotated

by 180° and allow it to level in.

– Align the height of the measuring tool (using the tripod or

by placing objects underneath as required) so that the

centre of the laser line exactly hits the previously marked
point 

Ⅱ

 on wall B.

– Mark the centre of the laser line on wall A as point 

Ⅲ

 (ver-

tically above or below point 

Ⅰ

).

– The discrepancy 

d

 between the two marked points 

Ⅰ

 and

Ⅲ

 on wall A reveals the actual horizontal deviation of the

measuring tool.

The maximum permitted deviation on the measuring dis-
tance of 2 × 

5

 m = 

10

 m is as follows: 

10

 m × ±

0.3

 mm/m = ±

3

 mm. The discrepancy 

d

 between

points 

Ⅰ

 and 

Ⅲ

 must therefore amount to no more than

3

 mm.

Checking the Level Accuracy of the Vertical Line

For this check, you will need a door opening (on solid
ground) which has at least 2.5 m of space either side of the
door.
– Place the measuring tool 2.5 m away from the door open-

ing on a firm, flat surface (not on a tripod). Switch on the
measuring tool and select vertical operation. Aim the
laser line at the door opening and allow the measuring
tool to level in.

2,5 m

2,5 m

– Mark the centre of the vertical laser line on the floor of the

door opening (point 

Ⅰ

), 5 m away on the other side of the

door opening (point 

Ⅱ

) and on the upper edge of the door

opening (point 

Ⅲ

).

d

2 m

Bosch Power Tools

1 609 92A 7LT | (28.04.2022)