Bosch PLR 50 Manual Original página 29

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OBJ_BUCH-946-002.book Page 29 Thursday, June 25, 2009 9:00 AM
Indirect Length Measurement (see figure D)
The indirect length measurement is used to measure distances
that cannot be measured directly because an obstacle would
obstruct the laser beam or no target surface is available as a
reflector. Correct results are achieved only when the laser
beam and the sought distance form an exact right angle
(Pythagorean Theorem).
In the illustrated example, the length B is to be determined.
For this purpose, A and C must be measured. A and B must
form a right angle.
For indirect length measurements, press button 5. The indica-
tor for indirect length measurement appears on the display
Measure the distance A as for a length measurement. Pay atten-
tion that the line segement A and the sought distance B form a
right angle. Afterwards, measure the distance C. The laser beam
remains switched on between both measurements.
Pay attention that the reference point of the measurement
(e.g., the rear edge of the measuring tool) is at the exact same
location for both measurements.
After completing the second measure-
ment, the distance B is calculated auto-
matically. The last individual measured
value is indicated at the bottom in the dis-
play, while the final result B is indicated
at the top.
Continuous Measurement (Tracking) (see figure E)
For continuous measurements, the measuring tool can be
moved relative to the target, whereby the measuring value is
updated approx. every 0.5 seconds. In this manner, as an ex-
ample, you can move a certain distance away from a wall, while
the actual distance can always be read.
For continuous measurements, push button 6. The indicator for
continuous measurement (tracking) appears in the display
Press the measuring button 12 to initiate
the measuring procedure. Move the meas-
uring tool until the required distance value
is indicated at the bottom of the display.
Pushing the measuring button 12 inter-
rupts the continuous measurement. The
current measured value is indicated in the display. Repeated
pushing of the measuring button 12 starts the continuous
measuring again.
Continuous measurement automatically switches off after
5 min. The last measured value remains indicated on the dis-
play. To cancel continuous measurement, you can change the
measuring function by pressing button 1, 3 or 5.
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