The little-known function of this miniature perforation:
Making a safety pin requires watchmaker’s precision , particularly in winding the spring around the central axis. This delicate process requires a stable attachment point.
This is where our small hole comes into its own. It serves as a guide for the machines as they wind the metal, allowing the spring tension to be precisely adjusted . Thanks to it, the pin retains its elasticity and reliability year after year, withstanding thousands of openings and closings.
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