Working With The Tripod (Accessory); Working With The Measuring Rail; Errors – Causes And Corrective Measures - Bosch GLM 80 Original Instructions Manual

face of the measurement must be smooth and reflect
well.
– Measure the section ten times in succession.
The deviation between the individual measurements and the
mean value must not exceed ± 2 mm. Record the measure-
ments in order to be able to compare the accuracy later on.

Working with the tripod (accessory)

The use of a tripod is particularly necessary for larger dis-
tances. Place the measuring tool with the 1/4" thread (19)
on the quick-release plate of the tripod (26) or a conven-
tional camera tripod. Tighten it using the locking screw of the
quick-release plate.
Set the reference level for measurements with a tripod by
pressing the button (10) accordingly (thread reference
level).
Working with the measuring rail (see figures I–K)
The measuring rail (24) can be used for a more exact grade
measurement result. Distance measurements are not pos-
sible with the measuring rail.
Insert the measuring tool into the measuring
rail (24) as shown and lock the measuring tool
in place with the locking lever (25). Press the
measuring button (2) to activate the "measur-
ing rail" operating mode.
Regularly check the accuracy of the grade measurement by
means of a reverse measurement or the levels on the meas-
uring rail.
In case of greater deviation, the measuring tool must be re-
calibrated. To do this, press and hold the grade measure-
ment button (3). Follow the directions on the display.
To end the "measuring rail" operating mode, switch off the
measuring tool and remove it from the measuring rail.
Errors – Causes and Corrective Measures
Cause Corrective measures
Temperature warning(j) flashes, measurement not pos-
sible.
The measuring tool is outside Wait until the measuring tool
the operating temperature of has reached operating tem-
–10 °C to +50 °C (in the con- perature.
tinuous measurement func-
tion, up to +40 °C).
Display shows "ERROR"
Addition/subtraction of Only add/subtract measured
measured values with differ- values with the same units of
ent units of measurement. measurement.
Angle between laser beam Increase the angle between
and target is too acute. the laser beam and the target
Target surface is too reflect- Use the laser target plate
ive (e.g. mirror) or not re- (28).
flective enough (e.g. black
material), or ambient light is
too bright.
Bosch Power Tools
Cause Corrective measures
The laser beam output (16) Wipe the laser beam output
(16) and/or reception lens
and/or reception lens (17)
(17) dry with a soft cloth.
are fogged up (e.g. due to a
rapid temperature change).
Calculated value is larger Divide the calculation into in-
2 3
than 999,999 m/m /m . termediate steps.
Display shows "> 60°" or "< –60°"
The grade measuring range Perform the measurements
for the measuring function or within the specified angle
reference level has been ex- range.
ceeded.
Display shows "CAL" and "ERROR"
The calibration of the grade Repeat the calibration ac-
measurement has not been cording to the instructions
carried out in the right order that appear on the display
or has not been carried out in and in the manual.
the correct positions.
The surfaces used for calib- Repeat the calibration on a
ration were not precisely ho- horizontal or vertical surface
rizontal or vertical. and check the surfaces be-
forehand if necessary using a
spirit level.
The measuring tool has Repeat the calibration and
moved or tilted when the hold the measuring tool still
button was pressed. against the surface when
pressing the button.
Battery charge indicator (g), temperature warning (j)
and "ERROR" shown in the display
The temperature of the Wait until the charging tem-
measuring tool is outside the perature range has been
permissible charging temper- reached.
ature range.
Battery charge indicator (g) and "ERROR" shown in the
display
The battery charging voltage Check whether the connec-
is not correct. tion has been established
correctly and that the micro
USB cable is working prop-
erly. If the device symbol
flashes, the battery is defect-
ive and must be replaced by
the Bosch after-sales ser-
vice.
Battery charge indicator (g) and clock symbol (f) shown
in the display
Charging time significantly Only use the original Bosch
extended due to the charging micro USB cable.
current being too low.
Measurement result implausible
Target surface reflection not Cover the target surface.
distinct (e.g. water, glass).
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