The main plate: Watchmaking's essential chassis

In the intricate world of watchmaking, where gears and springs dance in miniature precision, the main plate stands as a foundational element. Often described as the chassis of a watch's movement, this seemingly simple, flat component dictates the very form, size, and architectural layout of the internal mechanism. "The main plate is the chassis, which will dictate the shape, size, and architecture of the movement," explains Olivier Mory, a master watchmaker in La Chaux-de-Fonds.

Mory emphasizes its complexity, noting that its machining involves precise drilling and hollowing to accommodate the various gears and components. He considers it "the most complicated piece" within the movement, a sentiment echoed by many in the industry. The creation of the main plate is not merely a technical exercise; it is a historical narrative woven into the fabric of horology.

Its evolution has been marked by significant innovations, such as those attributed to Jean-Antoine Lépine in the 18th century. Lépine's contributions were so profound that his surname became a generic term in watchmaking, illustrating the main plate's pivotal role. From its basic function to its historical impact, the main plate remains an essential, albeit often unheralded, hero in the story of the contemporary watch.