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Bosch GAM 270 MFL Manual

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English | 23
Notes on "Compound Mitre" Operating Mode
The calculated mitre angleMTR can only be transferred for mitre saws, for
which the setting for vertical cuts is 0°. When the setting for vertical cuts is
90°, the angle for the saw must be calculated as follows:
90°–displayed angle MTR= angle to be set for the saw.
Grade Measurement Operating Mode
Switching the Laser On and Off
To switch on the laser beam, press the laser on/off button(18).
uDo not direct the laser beam at persons or animals and do not stare
into the laser beam yourself (even from a distance).
To switch off the laser beam, press the laser on/off button again(18).
uNever leave the measuring tool unattended when switched on, and
ensure the measuring tool is switched off after use. Others may be
blinded by the laser beam.
When not using the laser, switch it off in order to save energy.
Changing the Measuring Unit (seefigureB)
You can change between the units of measure "°", "%" and "mm/m" at any
time. For this, press the button for changing the unit of measure(20) as
many times as needed for the required unit of measure to be displayed in the
indicator(k) or (m). The current measured value(n) will be automatically
converted.
The unit-of-measure setting is retained when switching the measuring tool
on or off.
Switching the Audio Signal On and Off
The audio signal can be switched on or off with the audio signal button(19).
When the audio signal is switched on, the indicator for the audio signal(o)
appears in the display.
The signal tone setting is maintained after switching the measuring tool off
and on again.
Measured Value Indicator and Alignment Aids (see figureF)
With each movement of the measuring tool, the measured value(n) is up-
dated. If the measuring tool has been moved significantly, wait until the
measured value no longer changes before taking note of the value.
Depending on the position of the measuring tool, the measured value and
the unit of measure are indicated in the display rotated by 180°. Thus, the
indicator can also be read when working overhead.
The measuring tool uses alignment aids(h)/(i) on the display to show in
which direction it has to be tilted in order to reach the target value. In stand-
ard measurements the target value is the horizontal or vertical, in the Hold
function it is the stored measuring value.
If the target value is reached, the arrows for the alignment aids(h)/(i) go out
and, provided the audio signal is switched on, a continuous audio signal will
be played.
Contact-Free Measuring/Transferring of Grades
With the laser, it is possible to measure and transfer grades contact-free,
even over greater distances.
uDo not direct the laser beam at persons or animals and do not stare
into the laser beam yourself (even from a distance).
uAlways use the centre of the laser point for marking. The size of the
laser point changes with the distance.
To measure grades, align the measuring tool so that the laser beam runs
alongside the surface to be measured. To transfer grades, align the measur-
ing tool so that the desired grade is displayed as the measured value(n),
and mark the grade on the target surface using the laser point.
Note: When transferring grades via the laser, take into consideration that
the laser comes out30mm above the bottom edge of the measuring tool.
Accuracy Check and Calibration of the Measuring Tool
Check the accuracy of grade measurement
Check the accuracy of the measuring tool prior to critical measurements,
after intense variations in temperature as well as after heavy impact.
Before measuring grades <45°, the accuracy check should take place on a
level and roughly horizontal surface; before measuring grades >45°, on a
level and roughly vertical surface.
Switch on the measuring tool and place it on the horizontal/vertical surface.
Select the measuring unit ° (see "Changing the Measuring Unit
(seefigureB)", page23).
Wait for 10s and note down the measured value(n) for the grade measure-
ment.
Rotate the measuring tool by 180° around its vertical axis. Wait for another
10s and note down the second measured value(n) for the grade measure-
ment.
uCalibrate the measuring tool only when the difference between both
measured values is greater than 0.1°.
Calibrate the measuring tool in the position (vertical or horizontal), in which
the difference of the measured values has been determined.
The calibration can be performed only with the bottom side.
Bosch Power Tools 1 609 92A 7M1 | (28.04.2022)
… 23 …


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