"+" will be shown in the supplementary
displaying area of the screen (in the
third line), as per shown in figure 2, then
according to the area measurement
method to measure the second area
value, the result can be get as per shown
in figure 3, finally to press the
to get the accumulated value of both
the two measured area values, the two
measured area values will be shown in the
supplementary displaying area, and the
accumulated value will be shown in the
main displaying area, the result is shown
in the figure 4.
1
3
According to the area measurement
method to measure the first area value,
the result can be get as per shown in
figure 5, to press the
will be shown in the supplementary
EN
button
2
4
button, the "-"
displaying area of the screen (in the third
line), as per shown in figure 6, then
according to the area measurement
method to measure the second area
value, the result can be get as per shown
in figure 7, finally to press the
to get the accumulative minus value of
both the two measured area values, the
two measured area values will be shown
in the supplementary displaying area, and
the accumulative minus value will be
shown in the main displaying area, the
result is shown in the figure 8.
5
7
3) The accumulative plus / minus volume
The operation for accumulative plus/
minus volume shall be similar as the
operation for the accumulative plus /
minus area.
button
6
8
25