Clock is used for telling time. Most will have a 12-hour or 24-hour clock in general. Contains at least one hour, minute or second tool for short time. A stopwatch The original mechanical devices Check-rotation drive system The speed reduction gear is to get around. And needle time Dial a number using a time-out. Classifier of the watch called the "house", but there are other watches. I also used the hourglass timer, clock timer shell is a shell hole. By floating in water Until it sank, it is time, the sundial is set up to observe the movement of the sun. By the shadow of Sometimes we just have to tell time using another tool. This is known as a clock, such as drums play time of the monks, beating gongs at the time of the guests. The discharge time Etc. Watch Is one of the oldest human artifacts. Built to need a time to view the natural units such as breakfast, lunch, dinner, moon phase, which has been created and developed continuously into a clock that is used today sundial, sundial to measure time by the shadow caused. from the sun Widely used in antiquity, digital clock , digital clock. It displays the current time Watch some of the technology that can be tuned to match the global time using the Internet automatically, but must battery and timer.
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