Water Clock

old mechanism of clock ..whenthe fow level up the rack move and hence the pinion is rotated ...in catia it is not available to do animation under affect water ...so animation nedd to develop The oldest water clock we know of dates back to 1500 B.C., when it was interred in the tomb of Egyptian pharaoh Amenhotep I. The Greeks began using them around 325 B.C. and dubbed them clepsydras or "water thieves." ....you can read more about the water clock from this link http://en.wikipedia.org/wiki/Water_clock