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Glossary

Glossary - D

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DECK WATCH

A large-sized ship's chronometer.

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DEPTH ALARM

An alarm on a divers' watch that sounds when the wearer exceeds a pre-set depth.

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DEPTH METER or DEPTH SENSOR

A device on a divers' watch that determines the wearer's depth by measuring water pressure. It shows the depth either by analog hands and a scale on the watch face or through a digital display.

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DEVIATION

A progressive natural change of a watch's rate with respect to objective time. In case of a watch's faster rate, the deviation is defined positive, in the opposite case negative.

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DIAL

Face of a watch, on which time and further functions are displayed by markers, hands, discs or through windows. Normally it is made of a brass - sometimes silver or gold.

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DIGITAL WATCH

Said of watches whose indications are displayed mostly inside an aperture or window on the dial.

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DIVERS' WATCH

A watch that is water resistant to 200M. Has a unidirectional rotating bezel and a screw-on crown and back. Has a metal or rubber strap (not leather). May have a sapphire crystal and possibly, a wet-suit extension.

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