a clock pendulum having, as part of its shaft, an arrangement of brass and steel rods having different coefficients of expansion, such that the pendulum has the same length at any temperature.
[ 1745-55 ]
GRIDIRON PENDULUM
Meaning of GRIDIRON PENDULUM in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012