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– Choose a measuring section of approx. 3–10 m in length that is permanently un-
changed, the exact length of which is known to you (e.g. room width, door opening).
The measurement should be taken under favourable conditions, i.e. the measuring
section should be indoors and the target surface for the measurement should be
smooth and reflect well.
– Measure the section ten times in succession.
The deviation of the individual measurements from the mean value must not exceed ±
4mm over the entire measuring section in favourable conditions. Record the measure-
ments in order to be able to compare the accuracy at a later date.
Errors – Causes and Corrective Measures
Cause Corrective measures
Temperature warning (g) flashes, measurement not possible.
Measuring tool is outside of the operating
temperature range of -10°C to +45°C.
Wait until the measuring tool has reached
operating temperature.
"Error" indicator in the display.
Target surface is too reflective (e.g. mirror)
or not reflective enough (e.g. black mater-
ial), or ambient light is too bright.
Use the laser target plate (9).
The laser beam output (8) and/or recep-
tion lens (7) are fogged up (e.g. due to a
rapid temperature change).
Wipe the laser beam output (8) and/or re-
ception lens (7) dry with a soft cloth.
The calculated auto-sum is greater than
99,999m.
Divide the calculation into intermediate
steps.
Measurement result implausible.
Target surface reflection not distinct (e.g.
water, glass).
Cover the target surface.
Laser beam output (8) and/or reception
lens (7) are covered.
Keep the laser beam output (8) and/or re-
ception lens (7) clear.
Obstruction in the path of the laser beam. Laser point must be fully on the target sur-
face.
The indicator remains unchanged or the measuring tool reacts unexpectedly when
a button is pressed.
Software error. Remove the batteries, reinsert them and
restart the measuring tool.
Bosch Power Tools 1 609 92A 5E0 | (29.01.2020)