Measuring Procedure; Selecting The Reference Level (See Figure A); Basic Settings - Bosch GLM 100 C Professional Manual Original

OBJ_BUCH-1956-002.book Page 24 Monday, July 1, 2013 11:28 AM
24 | English
 Do not subject the measuring tool to extreme tempera-
tures or variations in temperature. As an example, do
not leave it in vehicles for long time. In case of large varia-
tions in temperature, allow the measuring tool to adjust to
the ambient temperature before putting it into operation.
In case of extreme temperatures or variations in tempera-
ture, the accuracy of the measuring tool can be impaired.
 Avoid heavy impact to or falling down of the measuring
tool. After severe exterior effects to the measuring tool, it
is recommended to carry out an accuracy check (see "Ac-
curacy Check and Calibration of the Grade Measurement"
and "Accuracy Check of the Distance Measurement" on
page 29) each time before continuing to work).
Switching On and Off
For switching on the measuring tool, the following possibili-
ties are given:
– Press the On/Off button 4: The measuring tool is switched
on and is in length measurement mode. The laser is not ac-
tivated.
– Pressing the measuring button 2: Measuring tool and laser
are switched on. The measuring tool is in length measure-
ment mode. When the measuring tool is inserted in the
measuring rail 27, the grade measurement function is acti-
vated.
 Do not point the laser beam at persons or animals and
do not look into the laser beam yourself, not even from
a large distance.
To switch off the measuring tool, press the On/Off button 4
for a few seconds.
When no button on the measuring tool is pressed for approx.
5 minutes, the measuring tool automatically switches off to
save the batteries/rechargeable batteries.
When the angle is not changed for approx. 5 minutes when in
the "Grade measurement" operating mode, the measuring
tool automatically switches off to save the batteries/re-
chargeable batteries.
When switching off automatically, all stored values are re-
tained.

Measuring Procedure

When the measuring tool is inserted in the measuring rail 27,
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 to by pressing the
respective function/mode button (see "Measuring Func-
tions", page 25).
After switching on, the rear edge of the measuring tool is pre-
set as the reference level for the measurement. By pressing
the reference level button 10, the reference level can be
changed (see "Measuring Functions", page 25).
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.
2 609 141 026 | (1.7.13)
 Do not point the laser beam at persons or animals and
do not look into the laser beam yourself, not even from
a large distance.
Aim the laser beam at the target surface. Briefly press the
measuring button 2 again to initate the measurement.
When the laser beam is switched on permanently, the meas-
urement already starts after the first actuation of the measur-
ing button 2. In continuous measurement mode, the measure-
ment starts immediately upon switching on.
Typically, the measured value appears after 0.5 and latest af-
ter 4 seconds. The duration of the measurement depends on
the distance, the light conditions and the reflection proper-
ties of the target surface. The end of the measurement is indi-
cated by a signal tone. The laser beam is switched off auto-
matically 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 the measurement, you can select between four reference
planes:
– The rear edge of the measuring tool or the front edge of the
90° folded-out positioning pin 9 (e.g. when measuring on-
ward from outer corners),
– The tip of the 180° folded-out positioning pin 9 (e.g. when
measuring from a corner),
– The front measuring-tool edge (e.g. when measuring on-
ward from a table edge),
– The centre of thread 19 (e.g. for tripod measurements).
To select the reference level, press button 10 until the re-
quested reference level is indicated on the display. Each time
after switching on the measuring tool, the rear end of the
measuring tool is preset as the reference level.
Subsequent changing of the reference level for measure-
ments that have already been carried out (e.g. when indicat-
ing measuring values in the measured-value list) is not possi-
ble.

"Basic Settings"

To access the "Basic settings" menu, press and hold the basic
settings button 8.
Briefly press the basic settings button 8 to select the individ-
ual menu items.
Press the minus button 5 or the plus button 11 to select the
setting within the menu items.
To exit the "Basic settings" menu, press the measurement
button 2.
Basic Settings
Tone Signals
On
Off
Bosch Power Tools