Compensation pendulum

Also found in: Encyclopedia.
See Pendulum.
a clock pendulum in which the effect of changes of temperature of the length of the rod is so counteracted, usually by the opposite expansion of differene metals, that the distance of the center of oscillation from the center of suspension remains invariable; as, the mercurial compensation pendulum, in which the expansion of the rod is compensated by the opposite expansion of mercury in a jar constituting the bob; the gridiron pendulum, in which compensation is effected by the opposite expansion of sets of rods of different metals.

See also: Compensation, Pendulum

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
A Classica Secunda from manufacturer Erwin Sattler, maker of the most accurate mechanical clocks in the world, forms the heart of the Grande PrE[umlaut]cision: its 30-day precision movement has a compensation pendulum and guarantees a precision of +/- 2 seconds per month.
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