3 How the mechanical watch movement operates A mechanical watch is composed of precision parts which are carefully assembled by an experienced craftsman. The movement is the heart of the watch. What type of structure and motion does the movement employ to maintain the required accuracy? Here is the basic structure and motion of a movement. Motion of the main parts within the movement Cross-section diagram Gear train (fourth wheel, third wheel, center wheel) Basic structure inside the movement Crown Mainspring Third wheel Fourth wheel Pallet lever Escape wheel Center wheel Balance wheel Winding wheel Center wheel Third wheel Fourth wheel Escape wheel Mainspring power Hair spring Pallet lever Balance wheel Winding wheel
Orient Catalogue
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