Credited with making the first small clock, historically, to Peter Henlein, the German maker of locks; Hanlein has invented in the early sixteenth century, a major vibrant to provide time capacity. The clocks run at that time mediated by hanging weights. And to serve time they must remain constant in the vertical position in order to work out outstanding weights. It has enabled the springs watchmakers to produce small mobile hours. Soon, the watch industry has spread in England, France, and Switzerland.The first few hours of heavy and inaccurate, and were heavy to the point where they were attached around the neck or hanging from the belt. It was the early hours of the arm (hand) and only one, and its case spherical or cylindrical. In the mid-seventeenth century spread unusual forms of hours.
In the late seventeenth century, many hours provided the needles that of minutes. But did not become common in the second hand watch, but in the twentieth century. We have developed a spring balance and lever chaos management in the late eighteenth century mechanisms.
Became hours, in the late seventeenth century, small and light degree allowed in checked coat pocket or bra. The most prevalent over more than 200 years, pocket watches. And wristwatches became popular in the late nineteenth century, but it was then designed for women only. And uncertainty soldiers during the First World War (1914- 1918 AD) that watches the most suitable of pocket watches. As a result, became the watches are also acceptable for men.
Electric clocks have entered a comparison which provides the ability through a very small battery, to use during the fifties of the twentieth century, and used these hours at the beginning of wheel balance it as the basis for a time, but they are contained later on fork vibrating tuning worked as a basis for a time almost the same way they operate crystals quartz in electronic watches. And appeared at the beginning of the eighth decade of the twentieth century, quartz watches, due to the accuracy they quickly replaced early electric clocks and made it useless to use.