The balance is a bar, balanced by two weights, or a circular ring, with a rim concentric to an axle carrying two pivots, upon which the ring can turn freely ; it therefore remains in equilibrium with itself by its nature, whatever may be its position, and should keep up a uniform movement in whatever position may be given it. The balance, joined to the first known escapement—that of the verge and crown-wheel—becomes the moderator or regulator of the old clocks, watches, etc. The balance alone cannot produce oscillations.
