The lever escapement is a crucial mechanism in mechanical watches, responsible for regulating the release of energy from the mainspring to the gear train, ultimately controlling the movement of the watch hands. Invented in the 18th century, it revolutionized watchmaking by providing greater accuracy and reliability compared to earlier escapements. The lever escapement consists of several key components: the escape wheel, pallet fork, and balance wheel. The escape wheel is driven by the gear train and interacts with the pallet fork, which has two jewel pallets. These pallets alternately lock and release the teeth of the escape wheel, allowing it to advance incrementally. The balance wheel, connected to the pallet fork via a staff, oscillates back and forth, driven by the energy released from the escape wheel. This oscillation is regulated by a hairspring, ensuring consistent timing. The lever escapement's design minimizes friction and wear, enhancing the watch's longevity and precision. Its widespread adoption in the 19th century established it as the standard escapement in most mechanical watches, a status it retains today. The lever escapement's efficiency and reliability make it a cornerstone of horological engineering, embodying the intricate craftsmanship and precision inherent in watchmaking.