hairspring

If this is a balance pivot, be very careful to see that your balance is true and poised before putting on hairspring and roller.

The hairspring stud E is of steel, shaped as shown, and comes outlined with the other parts.

We refer to arranging and disposing of the impulse of the escape wheel to meet the resistance of the hairspring.

As we set the bankings the pallets are all right; but to test matters, let us remove the hairspring and put the balance in place.

The Curb Pins sometimes produce the ferric oxide mentioned by their action on the hairspring.