9 EN
Operating manual – laser distance measuring device BD21 / BD26
Measurement with distances A and B:
1. Briefly press the Button for indirect measurements(9) one
time.
ð The symbol for indirect measurements appears on
the display.
ð The bar with number 1 (hypotenuse) flashes.
2. Press the Inclination button(15) for a long time.
ð There will be no angle displayed.
3. First, aim the device at the highest point(A) and briefly
press the Switch-on/measurement button(7) once to
perform a measurement. Make sure to hold the device as
steady as possible and place it level on the ground with the
two rear edges. The position at the two rear edges must
not be changed during the measurements!
ð The length of the line segment will be indicated in the
1st line of the upper measurement value display.
4. Align the device horizontally (point B) and briefly press the
Switch-on/measurement button(7) one time to measure the
horizontal distance.
ð The second measured value will be indicated in the
second line of the upper measurement value display.
ð The line segment to be determined is displayed as
result in the lower measurement value display(25).
Twofold indirect height measurement
This method is suitable for e.g. height measurements.
The measurement result is calculated by determining the
distances A and C as well as the inclination angle (standard
setting) or by determining the distances A, B and C.
Measurement with distances A, C and inclination angle:
1. Briefly press the Button for indirect measurements(9)
twice.
ð The symbol for indirect measurements appears on
the display.
ð The inclination angle is displayed in the second line of
the upper measurement value display on the right-hand
side (see example 31.1°).
ð The bar with number 1 (hypotenuse) flashes.
2. First, aim the device at the highest point(C) and briefly
press the Switch-on/measurement button(7) once to
perform a measurement. In doing so, hold the device as
steady as possible. The alignment of the device in
relation to the reference point must not be changed
during the measurements!
ð The first measured value will be displayed in the upper
measurement value display.
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