Checking Accuracy And Calibrating Inclination Measurement - Bosch Professional GLM 500 Manual

36 | English
– Porous surfaces (e.g. insulating materials)
– Structured surfaces (e.g. roughcast, natural
stone).
If necessary, use the laser target plate (17) (ac-
cessory) on these surfaces.
Inaccurate measurements are also possible where
the laser is pointed at target surfaces diagonally.
Layers of air at different temperatures and indir-
ectly received reflections can also influence the
measured value.
Checking accuracy and calibrating the
inclination measurement (see figures E1–E2)
Regularly check the accuracy of the inclination
measurement. This is accomplished by means of a
reverse measurement. To do this, lay the measur-
ing tool on a table and measure the inclination.
Turn the measuring tool by 180° and measure the
inclination again. The difference between the dis-
played values must not exceed 0.3°.
In case of greater deviation, the measuring tool
must be recalibrated. To do so, select in the
settings. Follow the directions on the display.
We recommend that you perform an accuracy
check and if necessary a calibration of the measur-
ing tool after extreme temperature variations and
after impact to the tool. After a temperature vari-
1 609 92A 5E4 | (07.05.2020) Bosch Power Tools