hairspring definition

  • noun:
    • an excellent coiled springtime that regulates the motion regarding the stability wheel in a wristwatch or clock.
    • A spring, made from a coil of fine line, that is used to manage the activity of a balance wheel in a wrist watch.
    • The slender recoil spring which regulates the motion regarding the balance in a timepiece.
    • In watch-making, the good hair-like spring coiled up within the balance-wheel and imparting movement to it.
    • a superb spiral-spring that regulates the action for the balance wheel in a timepiece

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