Timex W-268 Mode D'emploi page 272

To stop, press A again (START/STOP). All hands freeze.
To resume, press A (START/STOP) again, or to reset the
chronograph to zero, press B (FLY-BACK/RESET).
When the chronograph is reset, all hands move to zero.
After eight seconds, the watch resumes the normal
display of the second time zone time.
You may also reset and/or restart the chronograph while
it is running. To do so, press and hold B (FLY-BACK/RESET)
to zero the chronograph and release it when you wish to
restart. You do not have to wait for all hands to reach zero
before releasing the button; the timing will start internally
from the button release. This "fly-back" feature allows you
to measure lap time.
The compass may be used while the chronograph is
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running without interfering with its operation. See
COMPASS OPERATION.
TACHYMETER
Your watch may include a tachymeter scale, which can be
used to measure speed in miles per hour, kilometers per
hour, or knots, 60 - 500.
To begin, the chronograph must be reset (zero). See
CHRONOGRAPH.
Start the chronograph at the first mile or kilometer marker
by pressing A (START/STOP). Then stop the chronograph at
the next mile or kilometer marker by pressing A (START/
STOP) again. The 4th center hand points to the number of
miles or km per hour on the tachymeter scale.
Note that the amount of time between the two markers
must be less than one minute.
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