Bosch Professional GLL2-45 Consignes De Fonctionnement/Sécurité page 12

Checking the Leveling Accuracy of the
Vertical Line
For this check, a door opening is required with
at least 13 ft of space (on a firm surface) to
each side of the door.
– Position the tool on a firm, level surface
(not on a tripod) 13 ft away from the door
opening. Allow the tool to level in while in
cross-line operation mode, and direct the
laser beams at the door opening.
– Mark the center of the vertical laser line at
the floor of the door opening (point I), at a
distance of 26 ft beyond the other side
of the door opening (point II) and at the
upper edge of the door opening (point III).
Working with the Positioning Device
(see figures I-P)
The positioning device 13 provides easy ability
to properly position the laser line or lines.
It attaches to job site surfaces as follows:
– To drywall or wood walls using No. 8
screws
– To sit on the floor using retractable feet
– To steel studs using the magnets on
the back
– Position the tool on the other side of the
– The difference d between point III and the
– Measure the height of the door opening.
The maximum permitted deviation dmax is
calculated as follows:
dmax = double height of the door opening
x 0.0036 in/ft
Example: With a door opening height of 2
meters, the maximum permitted deviation is
dmax = 2 x 7 ft x 0.0036 in/ft = 0.05 in. Thus,
the marks must not be more than
0.05 in. apart.
Use with Attachments
– To ceiling grid rails using the clip
It can also be used as a mini tripod.
• To attach the laser tool, screw the 1/4"-20
• To adjust the height of the laser lines,
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door opening directly behind point II. Allow
the tool to level in and align the vertical
laser line in such a manner that its center
runs exactly through points I and II.
center of the laser line at the upper edge
of the door opening results in the actual
deviation of the tool from the
vertical plane.
functionality
mount into the tool and tighten. Turn the
knob and tool together as necessary to
properly position the laser line or lines.
adjust the height using the adjustment
knob on the clip attachment.