Chronograph Scales; Gmt - BMW Ball Manual Del Usuario

Chronograph scales

Tachymeter: Computes speed over a given distance.
The wearer can find the correct
speed per hour by recording the time
needed to travel the distance.
Description of operation
Please refer to the "Automatic Chronograph" instructions above to
reset the chronograph counter to zero position.
To compute the speed of a car over a certain distance, press the
top chronograph button [P1] to start timing. At the end of the fixed
distance, press the button again. If the time elapsed is 45 seconds,
the second hand should point to the figure 80 on the Tachymeter
scale. If the fixed distance is a kilometer then the car is traveling 80
kilometers per hour.
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GmT

See instructions for "Automatic Watch"
above, with the following changes.
• Date Setting: Unscrew the crown counterclockwise and pull it out to
position [1]. Turn the crown counterclockwise to set date. To prevent
damage to the date-switching mechanism, we advise not to manually
reset the date between 8pm and 2am. Ensure that the date change
takes place at midnight and not at noon.
• Set the time of the second time zone: In position [1], turn the crown
clockwise until the correct time zone appears on the dial. Turn the
GMT hand in one-hour increments to prevent wear on the movement.
• Set the local time: In position [2], turn the crown forwards or
backwards.
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