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The wristwatchA wristwatch is a device to the time measurement, this under for help take of a tape around the wrist is carried. The wristwatch in the left wrist is mostly carried. Nevertheless, wristwatches serve not only for the time, they are also carried with pleasure as a jewellery. The chronometreThe mechanical wristwatches which have displayed a high way exactness in a defined test are called chronometre. Only after this test is the manufacturer be entitled to call make chronometre. The only manufacturer who really allows to examine all watches is the company Breitling which looks at her watches, however, not only as a jewellery. The application watchesApplication watches are for military or other purposes like at the police, for divers and also the fire brigade conceived wristwatches. A sign of this kind of time knife is, according to the application kind, the special robustness compared with vibrations as well as surroundings temperatures, a high water density, the night read out and the announcement of the already last application time. The electronic wristwatchesDifferent attempts have been started to be able to build more precise watches with the help of the electricity. Thus there is, for example, the vocal fork clock. There has asserted itself at the market, nevertheless, the quartz clock. With this clock a quartz crystal provides for the tact. |