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Glashütte: Do watches only tell the hour hand to time? Watches only tell the hour and minute hands to time, why don't second hands have a point requirement? The hour hand is mounted on the hour wheel tube, the minute hand is mounted on the minute wheel tube, and they are connected through a cross wheel, maintaining a fixed transmission ratio. Therefore, when the hour hand points to the whole hour, the minute hand has a point requirement. The second hand is mounted on the second wheel shaft, belonging to the transmission wheel system, and it is not directly connected to the minute hand (that is, when the minute hand points to the whole minute, the second hand does not necessarily point to the 60 scale). All the adjustments of time can only adjust the hour and minute hands, but cannot adjust the second hand. Even if the minute hand points to the whole minute and the second hand is installed at the zero position, disharmony may occur after the needle is adjusted. In daily life, the unit of "minute" is sufficient for use, and there is no practical significance for seconds. Therefore, when assembling the "second" hand, it can be inserted in any position.
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