a counterweight.

A weight which balances another weight, or acts against a force, so as to establish equilibrium; an equal or counterbalancing weight.

figurative.

in a chronometer, a balance-wheel or a pendulum having arrangements which neutralize the effect of the expansion or contraction of the metal under…

= compensation-balance n.

compensating-balance, compensating-pendulum: see compensation, n. compounds 2.

spec. A contrivance or instrument for producing mechanical compensation: see quots.

Mining. A counterweight attached to a cage. Obsolete. rare.

A weight used to balance another weight; spec. that used to balance the weight of a rotating or ascending and descending part, so as to make it…