Bosch GLM 80 - Measuring Procedure and Reference Levels; Performing Measurements and Selecting Reference Points

Measuring Procedure
When the measuring tool is
inserted in the digital level
attachment 24, it is always in the
length measurement or grade
measurement function after
switching on by pressing the
measuring button 2. Other
measuring modes can be
switched by pressing the
respective function/mode button
(see “Measuring Functions”, page
23)
After switching on, the rear edge
of the measuring tool is preset as
the reference level for the
measurement. By pressing the
reference level selection 10, the
reference level can be changed
(see “Selecting the reference
level”, page 21).
Place the measuring tool with the
selected reference plane against
the desired starting point of the
measurement (e.g. a wall).
Briefly press the measuring button
2 to switch on the laser beam.
Aim the laser beam at the target
surface. Push the measuring
button 2 again to initiate the
measurement.
When the laser beam is switched
on permanently, the measurement
already starts after the first
actuation of the measuring button
2. In continuous measurement
mode, the measurement starts
immediately upon switching on.
Typically, the measured value
appears after 0.5 and the latest
after 4 seconds. The duration of
the measurement depends on the
distance, the light conditions and
the reflection properties of the
target surface. The end of the
measurement is indicated by a
signal tone. The laser beam is
switched off automatically upon
completion of the measurement.
When no measurement takes
place approx. 20 seconds after
collimating, the measuring tool
automatically switches off to save
the battery.
Selecting the Reference Level
(see figure A)
For measuring, it is possible to
select from four different
reference points:
• The rear edge of the
measuring tool or the front edge
of the 90
° folded-out positioning
pin 9 (e.g when measuring onward
from outer corners) ,
• The tip of the 180
° folded out
positioning pin 9 (e.g. when
measuring from a corner),
• The front edge of the
measuring tool (e.g., as when
measuring from the edge of a
table onward),
• The center of the 1/4” threaded
hole 19 (e.g., for measuring
with the tripod).
To select the reference level, press
button 10 until the requested
reference level is indicated on the
display. Each time after switching
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