Tool is a clock timer. The first clock that appeared in Europe is an imitation rather than hours created by the Muslims in the days of the splendor of Islam. Approximately 5000 years ago, the nation of Egypt watchmaking by observing the shadow of the sun. Unfortunately, these tools can not be used, when the sky becomes cloudy or at night the day at night time one may not see the sun.
The first hour can not record the time well, because there is no sign for minutes. Only later in the eighteenth century people find minutes and with the clock can be clocked properly. In the days of these advances we found the clock in various shapes and sizes.
There is a clock placed in the middle highways, office-office, and there are also hours to wear wrist. The clock was last run with per and there is also a battery wear. Before Indonesia's independence, most hours circulating in Indonesia are made in Switzerland. Now a lot of hours of Japanese output. And now too many hours that functions like a smartphone.
Source: Kitab Emas (Penemuan-penemuan dari Dulu Sampai Sekarang)
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