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Candle clock

Candle clocks were used at a time when mechanical clocks had not been invented. They provided people, back then, with the means of measuring the time duration that had elapsed. As can be seen, a candle clock uses a candle as its main element for showing the passage of time. It is made out of a particular type of wax, whose rate of burning is known. The height and width of the candle is fixed accordingly, so that it may be able to accurately show the passage of the required duration of time.