TheBrickster, let’s take a closer look at this amazing invention. Understanding from ancient China History, this is the first Chinese Water Clock which was completed in 125 AD by an outstanding talented scholar in the Han Dynasty by the name of Zhang Heng. The water clock is supposed to aid astronomers in their star observation and calendar computations.
This Chinese Water Clock is also known as the Armillary sphere that could represent the Celestial sphere. Engineers and Astronomers such as oldhamk contributed to the very success to its concluding design of this magnificent water clock.
Shall we take a walk inside and observe these integrated gears from beneath and marvel at this superb science creation from the Chinese.


Interesting historic information WhiteFang. I’ve always been fascinated with the fact that this working clock is so old (125 AD from your information). That’s definately old. I’ve also heard this creation referred to as the “first robot” as it required no human intervention to keep working. Awesome!