National Geographic NG752 SERIES, Инструкция по эксплуатации

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3) Measuring two times
- Press push button A to start
the chronograph.
- Press push button B to freeze
the display. The chronograph
keeps running. The display
indicates the time elapsed since
the chronograph was first
stopped.
- Press push button A to stop
the chronograph. The display is
frozen, and the original time
measured is displayed.
- Press push button B to run the
display again. It gives the time
elapsed since the chronograph
was stopped on the previous
step (a second time).
D A
C
B
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