Hamilton 251.272 - Page 11

12 © HAMILTON 2010 – INSTRUCTION MANUAL © HAMILTON 2010 – INSTRUCTION MANUAL 13
3. Operating instructions 3. Operating instructions
Caliber 
Setting the time
. Pull out the crown C completely to position (p): the seconds hand stops.
. Set the time by turning the crown in the desired direction.
. Push the crown back in completely to position (p): the seconds hand starts again, allowing perfect synchro-
nization with a time signal.
Setting the day, the date, the month and the moon phase
Set the day* by pressing button D.
Correction of the date, month and moon phase.
. Pull out the crown C to position (p).
. To set the date**, turn the crown clockwise, the month change at each complete revolution of the date hand.
. To set the moon phase***, turn the crown counterclockwise.
. Push the crown back in completely.
* rapid day correction is not possible between . p.m. and  o’clock midnight
** date correction is not recommended between  p.m. and  a.m.
*** the moon phase cannot be adjusted between  a.m. and  a.m.
Using the chronograph / Start-Stop function
Timing a single event:
. Press button A: the chronograph starts.
. Press button A: the chronograph stops.
. Press button B to reset to zero.
Note: Before you start timing, the hands should be reset to zero. If necessary, press button B.
Cumulative time function
This measures successive times. Each result is added to the previous one.
. Press button A: the chronograph starts.
. Press button A again: the chronograph stops.
Repeat these two steps as many times as desired. At the end of the last measurement, the chronograph displays
the total of all the times measured. Press button B to reset to zero.
Caliber 
Setting the time
. Pull out the crown C completely to position (p): the seconds hand stops.
. Set the time by turning the crown in the desired direction.
. Push the crown back in completely to position (p): the seconds hand starts again, allowing perfect synchro-
nization with a time signal.
Setting the date
Set the date* by pressing button D. The date changes at each press.
* date correction is not possible between . p.m. and  p.m.
Using the chronograph / Start-Stop function
Timing a single event:
. Press button A: the chronograph starts.
. Press button A: the chronograph stops.
. Press button B to reset to zero.
Note: Before you start timing, the hands should be reset to zero. If necessary, press button B.
Cumulative time function
This measures successive times. Each result is added to the previous one.
. Press button A: the chronograph starts.
. Press button A again: the chronograph stops.
Repeat these two steps as many times as desired. At the end of the last measurement, the chronograph displays
the total of all the times measured. Press button B to reset to zero.