Crane AU7-PF-23GA Manual Del Usuario página 68

Main modes
The "SPLIT" indicator will appear in the upper display
segment.
The stop watch will continue to record while the interim
time is shown on the display
3. Push the "SELECT" button again to show the active stop
watch.
4. To stop time measurement, push the "ST./STP." button
again.
5. To reset the stop watch to zero again, hold the "SELECT"
button down for approx. 3 seconds.
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