Bosch Professional GLM 50 C Original Instructions Manual page 23

Deactivating the Bluetooth® interface
To deactivate the Bluetooth® connection, press the Bluetooth® button (6). To deactivate
the Bluetooth® signal, press the Bluetooth® button (6) once again or the [–] button (8)
or switch off the measuring tool.
Practical advice
For more information, visit the Bosch product page, see QR code, page 8.
u
The measuring tool is equipped with a wireless interface. Local operating restric-
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tions, e.g. in aeroplanes or hospitals, must be observed.
General advice
The reception lens (14) and the laser beam output (15) must not be covered during the
measuring process.
The measuring tool must not be moved while a measurement is being taken. For this
reason, place the measuring tool against or on a firm surface whenever possible.
Influences on the measuring range
The measuring range depends on the lighting conditions and the reflective properties of
the target surface. For better visibility of the laser beam in bright extraneous light, use
the laser viewing glasses (18) (accessory) and the laser target plate (17) (accessory) or
shade the target area.
Influences on the measurement result
Due to physical effects, the possibility of inaccurate measurements when measuring vari-
ous surfaces cannot be excluded. These include:
– Transparent surfaces (e.g. glass, water)
– Reflective surfaces (e.g. polished metal, glass)
– Porous surfaces (e.g. insulating materials)
– Structured surfaces (e.g. roughcast, natural stone).
If necessary, use the laser target plate (17) (accessory) on these surfaces.
Inaccurate measurements are also possible where the laser is pointed at target surfaces
diagonally.
Layers of air at different temperatures and indirectly received reflections can also influ-
ence the measured value.
Checking accuracy and calibrating the grade measurement (see figure G)
Regularly check the accuracy of the grade measurement. This is accomplished by means
of a reverse measurement. To do this, lay the measuring tool on a table and measure the
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