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https://paganidesignwatch.co/blogs/new-product/mechanical-watch-movement-the-ultimate-beginners-guide

Watchmaking is an eldern art. Engineers used portable spring-driven clocks to tell time in the 15th century. Winding mainsprings and rotating balance helped introduce mechanical watches in the 16th century. The advent of vibrating quartz crystals resulted in quartz watches and relegated the use of mechanical watches in