Timex T49761 User Manual

Page 24

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Chronograph: The chronograph records timed segments for the duration of
your activity.

Declination: To account for the difference between true north and magnet-
ic north, a compass uses a declination angle setting. Westerly declinations
are subtracted from the computed compass heading while easterly declina-
tions are added. See the table on pages 25 and 26 for a list of declinations
for major world cities.

Digital: As it relates to watches, digital tells time with the use of numbers.

In Hg: In Hg stands for Inches of mercury, which is a unit for measuring air
pressure. One inch of mercury is equivalent to 33.86 millibars.

Lap: Lap time records the time or duration of individual segments of your
activity.

Magnetic North: The direction of the earth’s magnetic pole and the direction
towards which a compass needle points, which differs from true north (see
below). The difference between true north and magnetic north is used to
calculate the declination angle used by the watch’s compass.

GLOSSARY

This glossary provides definitions for some of the features and functions of
the watch described throughout this manual.

Altimeter: An instrument used to determine the altitude of an object with
respect to a fixed level. Typically altitude is measured with respect to sea
level.

Analog: As it relates to a watch, analog tells time with the use of hands.

Barometer: A barometer measures atmospheric pressure and can help
predict changes in weather.

Barometric Pressure: Air pressure as it relates to weather forecasts. Higher
pressure usually indicates warmer and clearer weather while lower
pressure typically indicates cloudy weather and a greater chance of precip-
itation.

Calibration: A technique to improve the accuracy of the compass, altimeter,
barometer, and weather forecast, primarily by compensating for local
conditions.

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