Timex 810-095009-NA, WS4, W253 user manual Glossary

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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 precipitation.

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

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

Declination: To account for the difference between true north and magnetic north,

a compass uses a declination angle setting. Westerly declinations are subtract- ed from the computed compass heading while easterly declinations are added.

See the table on pages 24 and 25 for a list of declinations for major world E 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.

MB: MB stands for millibars, which is a metric unit for measuring air pressure. One millibar is equal to .0295 inches of mercury.

Sea Level Pressure: Air pressure for a specific location adjusted for difference in the altitude of a location. Typically, local pressure will be lower than sea level pressure because air pressure decreases with altitude.

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Contents W253 810-095009-NA English Français Español Table of Contents Setting the Timer Operating the Timer Timex Expedition WS4 watch will help you get there IntroductionTimex Expedition WS4 Watch Features Calibrating the Compass TimerAlarm Setting the Time and DateCalibrating Altitude or Barometer and Setting the Weather Changing the Display Time ModeAltimeter Mode Setting the Time and MeasurementsSetting the Target Altitude or Altitude Alarm Operating the Barometer Barometer ModeTemperature and Forecast Compass Mode City DEC. Angle Using the Compass Chrono ModeLaps and Splits Button FunctionsReviewing Activity Data Review ModeOperating the Timer Timer ModeSetting the Timer Operating the Alarm Alarm Mode Setting an Alarm Calibration Mode Indiglo NIGHT-LIGHT Setting and Calibrating Your Reference PointsGlossary Timex International Warranty
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