Working Advice - Bosch GTL 3 Professional Originalbetriebsanleitung

OBJ_BUCH-828-005.book Page 18 Friday, February 5, 2016 1:33 PM
– Position the measuring tool (without turning it) at a dis-
– Turn the measuring tool by 45° so that the centre of the
– Turn the measuring tool by 45° so that the centre of the
1 609 92A 267 | (5.2.16)
Downloaded from www.Manualslib.com
18 | English
tance of 5 m so that the crossing point of the laser lines
is on the already marked point II and that the 0° laser
line runs through the point III.
Mark the 45° laser line at a distance of 5 m (Point IV).
0° laser line runs through the point IV.
The crossing point of the laser lines must still be on the
point II.
Mark the 45° laser line at a distance of 5 m as point V.
0° laser line runs through the point V.
The crossing point of the laser lines must still be on the
point II.
Mark the 45° laser line at a distance of 5 m as point VI.
manuals search engine
– Turn the measuring tool by 45° so that the centre of the
0° laser line runs through the point VI.
The crossing point of the laser lines must still be on the
point II.
– Mark the centre of the 45° laser line at a distance of
5 m as point VII as near as possible next to the point I.
– The difference d of the two points VII and I is the actu-
al deviation of the 0° laser line and the 45° laser line.
The measuring length 4 x 5 m = 20 m has a maximum ad-
missible deviation of: 20 m x ±0.4 mm/m* = ±8 mm.
Therefore, the maximum difference d between the points
I and VII may be 8 mm or less.
* The value ±0.4 mm/m results from the angle accuracy
±0.2 mm/m plus a possible uncertainty of 0.2 mm/m
while turning.

Working Advice

 Always position the measuring tool flat on the floor
or fix it flat on the wall. In case of uneven positioning
or fixing, the angle is smaller than 45° and 90°.
 Always use the centre of the laser line for marking.
The width of the laser line changes with the distance.
 Never use the laser lines that the measuring tool
standing on the floor projects on the wall for align-
ment. The measuring tool is not self-levelling. There-
fore, the line on the wall is distorted.
 The reference point for the alignment of tiles is the
crossing point P of the laser lines directly in front of
the measuring tool. In order to mark an angle, the
measuring tool has to be turned at this crossing
point, see figure F.
Bosch Power Tools