| He did this with a clepsydra, a vessel with a hole in the bottom and one in the top. |
| The Djyotisha also teaches the art of constructing a clepsydra, or water-clock. |
| In the northeast corner of the hall, a stone staircase leads to a room that held a clepsydra, a pot with a hole through which water drained at a constant rate that was used to measure the passage of time. |
| Mr. Vouillamoz, an engineer in nuclear physics and a microfluids specialist, wanted to create a new application of that ancient concept by replicating a clepsydra in a wristwatch. |
| By means of an astrolabe or clepsydra, we determine the time of the start and end of the eclipse. |
| 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. |
