The most significant physical artifact of avout society. Each of the largest concents has a great clock, designed using varying principles and technologies, but all capable of measuring and displaying time on the order of millenia. The great clock displays the time of day and the year, powers the various gates of the concent, and serves as a polar axis drive for telescopes and other observational gear if the concent has a starhenge. This article is a . You can help My English Wiki by expanding it.