Copper Balance Tack Hairspring Holding Assembly Watch Repair Pendulum Holder

Copper balance tack for holding the balance bridge steady while you adjust the hairspring beat, straighten a kink, undercut screws or fit timing washers.

⭐ At a glance

Material: Copper

✔️ Condition: New with tags

🔧 Use: Holds the balance bridge secure during hairspring and timing work

🔧 What it does & how to use

A balance tack is a bench essential for watchmakers and hobbyist repairers working on the balance and hairspring. It grips and steadies the balance bridge so both hands are free for delicate spring and screw work, giving a firm, controlled hold that reduces the risk of damaging the fragile hairspring.

• Seat the balance: Place the balance bridge onto the tack so it sits securely and cannot roll or shift.
• Adjust the beat: With the balance held steady, gently reposition the hairspring stud or collet to correct the beat error.
• Straighten kinks: Use fine tweezers to ease out any kink or distortion in the hairspring while the balance stays fixed in place.
• Undercut screws: Work on balance screws with the assembly held firm on the tack for a steady, controlled cut.
• Fit timing washers: Add or remove timing washers on the balance screws without the assembly moving underneath you.