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The first sundial was invented in 3500 B.C. in ancient Egypt to determine the time of harvest seasons.
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They used sand glasses to tell time.
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The first watch was made so it was an easier way to tell time conviently all day long even when there was no clock around.
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Screws are placed in clocks to make the hands move on their own.
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The second hand was added to the clock and watch so that you could tell the exact time.
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They used to look at how much the candle has melted and could tell the estimated time.
