Aqua Clock - Back to the basics! He who did not understand the beginnings, can not understand the future!
That was the idea when i was creating the Aqua Clock. When watter is going up it is am, watter going down pm, two metal pointers telling us which part of the day is, on picture is 16:00 or 4 pm. So it's 12:00 on the top and 00:00 on the bottom.