In many cities of the country, you will find a clock tower on the main square. The clock on this clock tower has been running for decades. But have you ever tried to know whether this clock runs on battery or on a key? Let us tell you how these big clocks run. How do these watches work? Whenever we see a clock tower, this question definitely comes to our mind that how do such huge clocks run on their own. Do they have any battery or do they run…
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