SNDWAY SW-G10S, Руководство пользователя

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Do round-robin selection between continous addition
and continuous subtraction by pressing button .
Short press , "-" shows in the major display area,
entering subtraction mode. Value of last measurement
and the result of subtraction will be showed on the
screen.
Area cumulative function: Measure the first area as
showing in PIC1. Then press button , and measure
the second area as showing in PIC2, there is a "+" in the
left bottom. At last, press button to get the summation
result of these two areas which is showing in PIC3.
Not only length can be caculated in addition and
subtraction, but area and volume can do the caculation
as well. Take area as sample:
PIC1 PIC2 PIC3
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