Bosch Professional GLL Series Original Instructions Manual page 11

– 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).
– Rotate the measuring tool 180° and position it on the
other side of the door opening, directly behind point Ⅱ.
Allow the measuring tool to level in and align the vertical
laser line in such a way that its centre passes through
points Ⅰ and Ⅱ exactly.
– Mark the centre of the laser line on the upper edge of the
door opening as point Ⅳ.
– The discrepancy d between the two marked points Ⅲ and
Ⅳ reveals the actual vertical deviation of the measuring
tool.
– Measure the height of the door opening.
You can calculate the maximum permitted deviation as fol-
lows:
Doubled height of the door opening × 0.1 mm/m
Example: At a door opening height of 2 m, the maximum de-
viation amounts to
2 × 2 m × ±0.1 mm/m = ±0.4 mm. The points Ⅲ and Ⅳ
must therefore be no further than 0.4 mm from each other.
Working Advice
Only the centre of the laser point or laser line must be
u
used for marking. The size of the laser point/the width of
the laser line changes depending on the distance.
Bosch Power Tools
Working with the Tripod (Accessory)
A tripod offers a stable, height-adjustable support surface
for measuring. Place the rotating platform with the 5/8" tri-
pod mount (18) on the thread of the tripod (24) or a com-
mercially available building tripod. Tighten the rotating plat-
form using the locking screw of the tripod.
Roughly align the tripod before switching on the measuring
tool.
Working with the laser receiver (accessory)
Use the laser receiver (22) to improve detection of the laser
lines in adverse lighting conditions (bright environment, dir-
ect sunlight) and over greater distances. When working with
the laser receiver, switch on receiver mode (see "Receiver
Mode", page 8).
Laser Goggles (Accessory)
The laser goggles filter out ambient light. This makes the
light of the laser appear brighter to the eye.
Do not use the laser goggles (accessory) as protective
u
goggles. The laser goggles make the laser beam easier to
see; they do not protect you against laser radiation.
Do not use the laser goggles (accessory) as
u
sunglasses or while driving. The laser goggles do not
provide full UV protection and impair your ability to see
colours.
Example applications (see figures A–E)
Examples of possible applications for the measuring tool can
be found on the graphics pages.
Maintenance and Service
Maintenance and Cleaning
Keep the measuring tool clean at all times.
Never immerse the measuring tool in water or other liquids.
Wipe off any dirt using a damp, soft cloth. Do not use any de-
tergents or solvents.
The areas around the outlet aperture of the laser in particular
should be cleaned on a regular basis. Make sure to check for
lint when doing this.
Only store and transport the measuring tool in the case (26).
If the measuring tool needs to be repaired, send it off in the
case (26).
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
English | 11
1 609 92A 58T | (07.08.2020)