| The Djyotisha also teaches the art of constructing a clepsydra, or water-clock. |
| In the clepsydra the descent of the weight was controlled by the size of the stream of flowing water. |
| He did this with a clepsydra, a vessel with a hole in the bottom and one in the top. |
| The water-clock, or clepsydra, has been known to the Chinese for centuries. |
| He designed a lotus clepsydra, that is a water clock which had a bowl shaped like a lotus flower on the top into which water dripped. |
| Altogether, then, these early clocks were easily surpassed in accuracy of timekeeping by a sun-dial or a good clepsydra. |
