Balance Wheel
From BiblePortal Wikipedia
Balance Wheel [1]
(1): A wheel which regulates the beats or pulses of a watch or chronometer, answering to the pendulum of a clock; - often called simply a balance.
(2): A wheel which imparts regularity to the movements of any engine or machine; a fly wheel.
(3): A ratchet-shaped scape wheel, which in some watches is acted upon by the axis of the balance wheel proper (in those watches called a balance).
