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T ransparent surfaces, such as glass, generally
reflect the ultrasound.
T he battery must not be empty. An empty bat-
tery is shown in the display
symbol
I f a definitive measurement is not possible,
the display shows the „Err" information. The
measurement must then be repeated.
Adding lengths together
M easure a length as described in the section
„Measuring length". The length appears in
the top line of the display
N ow press the RECALL button
transferred to the bottom line. This means that
it has been saved in the aggregate memory.
The character „+" appears at the top of the
display. The device displays in this way, that it
is ready for a new length measurement.
P ress the READ button
has now been measured, appears at the top
of the display.
P ress the RECALL button. The measured value
is then transferred to the aggregate memory,
and the aggregate of the two measured
lengths appears at the bottom of the display.
If the measurement is an incorrect measure-
ment, do not press the RECALL button but
press the READ button again. The measured
value, which is displayed at the top, is over-
written. Press the RECALL button to adopt the
value into the aggregate memory.
Y ou can repeat this procedure as often as
you wish, as long as the length of 9999.99 m
is not exceeded.
12 GB/IE
.
4
by the battery
10
.
10
. The length is
5
. The length, which
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