what is the speciality in big ben
December 10, 2006 10:53am CST
time is predicted with that clock only
10 Dec 06
The clock of Big Ben uses a double three-legged gravity escapement which provides the best separation between pendulum and clock mechanism. Together with an enclosed, wind-proof box sunk beneath the clockroom, the Great Clock's pendulum is well isolated from external factors like snow, ice and pigeons on the clock hands, and keeps remarkably accurate time.