The middle and upper gears on the transmission shaft drove the timekeeping system in the bottom level of the clock tower, the celestial globe in the middle level and the armillary sphere on the top level, all in time with the regular movement of the drive wheel.
在天柱上面，另外連貫著兩個齒輪，分別帶動下層的報時系統、中層的渾象，以及上層的渾儀，整個水運儀象台，就這麼均勻地運轉不息了。