Operation Manual

English | 13
Bosch Power Tools 1 609 92A 0LH | (28.4.14)
Influence Effects on the Measuring Result
Due to physical effects, faulty measurements cannot be excluded when measuring on
different surfaces. Included here are:
– Transparent surfaces (e.g., glass, water),
– Reflecting surfaces (e.g., polished metal, glass),
– Porous surfaces (e.g. insulation materials),
– Structured surfaces (e.g., roughcast, natural stone).
If required, use the laser target plate 9 (accessory) on these surfaces.
Furthermore, faulty measurements are also possible when sighting inclined target
surfaces.
Also, air layers with varying temperatures or indirectly received reflections can affect
the measured value.
Accuracy Check of the Distance Measurement
The accuracy of the measuring tool can be checked as follows:
– Select a permanently unchangeable measuring section with a length of approx. 3
to 10 metres; its length must be precisely known (e.g. the width of a room or a door
opening). The measurement should be carried out under favourable conditions,
meaning, the measuring distance must be indoors and the target surface for the
measurement must be smooth and reflect well.
–Measure the distance 10 times after another.
The deviation of the individual measurements from the average value must not exceed
±4 mm over the entire measuring section in favourable conditions. Record the meas-
urements in order to be able to compare the accuracy at a later date.
Troubleshooting – Causes and Corrective Measures
Cause Corrective Measure
Temperature warning indicator (g) flashing; measurement not possible
Measuring tool is outside of operating
temperature range of – 10 °C to +45 °C
(+14 °F ... +113 °F).
Wait until the measuring tool has reached
the operating temperature
“Error” indication in the display
The target surface reflects too intensely
(e.g. a mirror) or insufficiently (e. g. black
fabric), or the ambient light is too bright.
Work with the laser target plate 9
(accessory)
OBJ_BUCH-2099-003.book Page 13 Monday, April 28, 2014 1:27 PM