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WATCHES |
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WATCHES 2 |
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| Crystal | The cover on the watch face is called the crystal. There are three types of crystals commonly found in watches: Acrylic crystal is an inexpensive plastic that allows shallow scratches to be buffed out. Mineral crystal is composed of several elements that are heat-treated to create an unusual hardness that aids in resisting scratches. Sapphire crystal is the most expensive and durable, approximately three times harder than mineral crystals and 20 times harder than acrylic crystals. A non-reflective coating on some sport styles prevents glare. |
| Hands |
The hands of a watch are the pointing device anchored at the centre and circling around the dial indicating hours, minutes, seconds and any other special features of the watch. There are many different types of hands: Some watches now use LED displays instead of hands
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| Balance Wheel | The regulating organ of a watch with a mechanical movement that vibrates on a spiral hairspring is called the balance wheel. Lengthening or shortening the balance spring makes the balance wheel go faster or slower to advance or retard the watch. The travel of the balance wheel from one extreme to the other and back again is called oscillation. |
| Bezel | The surface ring on a watch that surrounds and holds the crystal in place is called the bezel. A rotating ratchet bezel moves in some sport watches as part of the timing device. If rotating bezels are bi-directional (able to move clockwise or counter clockwise), they can assist in calculations for elapsed times. |
| Bracelet |
A bracelet is the flexible metal band consisting of assembled links, usually in the same style as the watch case. Detachable links are used to change the length of the bracelet. Bracelets can be made of stainless steel, sterling silver, gold, or a combination. |
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Case (or Watchcase) |
The watchcase is the metal housing that contains the internal parts of a watch. Stainless steel is the most typical metal used, but titanium, gold, silver and platinum are also used. Less expensive watches are usually made of brass that has been plated with gold or silver. |
| Crown | The nodule extending from the watchcase that is used to set the time, date, etc. is called the crown. Most pull out to set the time. Many water-resistant watches have crowns that screw down for a better water-tight seal. |
| Dial | The watch face that contains the numerals, indices or surface design is called the dial. While these parts are usually applied, some may be printed on. Sub-dials are smaller dials set into the main face of the watch. These can be used for added functions, such as elapsed times and dates. |
| Escapement | This part of the watch restricts the electrical or mechanical impulses of the gear train, metering out the passage of time into equal, regular parts. |
| Gear Train | This series of small gears in both quartz and mechanical movement watches is responsible for transmitting the power from the battery (in a quartz watch) or spring (in a mechanical watch) to the escapement, which distributes the impulses that mark the time. |
| Internal Watch Parts | A watch’s main timekeeping mechanism is called its movement. Today’s watch movements fall into two categories: Automatic mechanical or quartz. Automatic mechanical movements mark the passage of time by a series of gear mechanisms. Most automatic movements are wound by the normal, everyday movement of your wrist, which charges the watch’s winding reserve. Quartz movements are powered by a battery and do not stop working once removed from your wrist. |
| Mainspring | The mainspring is the energy source responsible for powering the watch movement (as opposed to a battery in a watch with a quartz crystal movement). The spring is wound, either manually (using the winding stem) or automatically, by the motion of the wearer’s wrist. Potential energy is stored in the coiled spring, then released to the gear train which transmits the power to the escapement and motion work, which turns the hands on the watch dial. |
| Motion Work | The motion work is a series of parts inside a watch that receive power from the escapement and gear train, which distribute and generate the watch’s power. The motion work is responsible for actually turning the watch’s hands. |
| Strap | A strap is simply a watchband made of leather, plastic or fabric - match straps with your other fashion accessories. |