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Information about the device
Device description
The laser distance measuring device BD21 /
determine distances, areas and volumes in interior spaces.
Indirect measurements are carried out employing the
Pythagoras function.
The device is equipped with separate operating elements (4) for
the different measuring functions. The multi-line and optionally
also illuminated display (5) indicates the determined values.
Owing to the dust- and splash-proof housing (IP54), the device
is also suited for use on construction sites.
Measuring range
The range of the device can be gathered from the Technical
data chapter. Under certain conditions – e.g. at night, in twilight
or when the target is hidden in the shade – greater distances
are possible even without target plate. During the day use a
target plate to increase the distance for poorly reflecting targets.
Target surfaces
There might be measurement errors when the laser encounters
colourless liquids (e.g. water), dust-free glass, styrofoam or
other semi-permeable materials. The measurement result may
also be falsified if the laser encounters a high-gloss surface and
is deflected by it. Non-glossy, non-reflective or dark surfaces
can extend the measurement duration.
Device depiction
6
5
DI ST
4
TIME R
CL EA R
Unit s
OF F
4
BD26
is used to
1
2
3
laser distance measuring device BD21 / BD26
No.
Designation
1
Battery compartment opening
2
Multifunctional end piece
3
Tripod thread
4
Operating elements
5
Display
6
Laser
Operating elements
17
16
15
14
13
No.
Operating element
7
Press briefly:
Switch-on/measurement button
Press for a long
Button for permanent distance
time:
measurements
8
Press briefly:
Minus button
Press for a long
Signal tone button (on/off)
time:
9
Press briefly:
Button for indirect measurements
10
Press briefly:
Timer button
Press for a long
Setting the timer
time:
11
Press briefly:
Unit button (ft, in, m)
12
Press briefly:
Delete button
Press for a long
Switch-off button
time:
13
Press briefly:
Save button (history)
14
Press briefly:
Reference button
15
Press for a long
Inclination button (on/off)
time:
16
Press briefly:
Area/room volume button
17
Press briefly:
Plus button
DIST
TI M E R
CLE AR
U ni ts
OFF
7
8
9
10
11
12
EN
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