Bosch 0 603 663 B04 Original Instructions Manual page 21

Automatic Levelling
Working with automatic levelling (see figures E–G)
To work with automatic levelling, the automatic levelling status indicator (3) must not
light up continuously. If necessary, switch automatic levelling on again by pressing the in-
cline function button (2) so that the status indicator goes out.
Position the measuring tool on a level, firm support or attach it to a tripod (7).
The automatic levelling function automatically compensates irregularities within the self-
levelling range of ±4°. The levelling is finished as soon as the laser lines stop moving.
If automatic levelling is not possible, e.g. because the surface on which the measuring
tool stands deviates by more than 4° from the horizontal plane, the laser beams begin to
flash.
If this is the case, set up the measuring tool in a level position and wait for the self-level-
ling to take place. As soon as the measuring tool is within the self-levelling range of ±4°,
the laser beams will light up continuously.
It is not possible to work with automatic levelling outside the self-levelling range of ±4°,
as the levelling accuracy of the laser beams cannot be guaranteed and it cannot be guar-
anteed that the laser beams are perpendicular.
In case of ground vibrations or position changes during operation, the measuring tool is
automatically levelled again. Upon re-levelling, check the position of the horizontal or
vertical laser line with regard to the reference points to avoid errors by moving the meas-
uring tool.
Working with the incline function (see figure H)
To work with the tilt function, press the incline function button (2). When the incline
function is engaged, the status indicator (3) lights up green.
For work with the incline function, automatic levelling is switched off. You can hold the
measuring tool freely in your hand or place it on a sloping surface. This means that the
laser beams are no longer levelled and no longer necessarily run perpendicular to one an-
other.
Working Advice
Only the centre of the laser point or laser line must be used for marking. The size
u
of the laser point/the width of the laser line changes depending on the distance.
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable support surface for measuring. Place the
measuring tool with the 1/4" tripod mount (9) on the thread of the tripod (7) or a con-
Bosch Power Tools
English | 21
1 609 92A 541 | (11.11.2019)