Water Hour

Exploration Stage: Collector’s House
From: Isabelle
Description: I wonder, what other clocks it meant? What does your inner voice tell you? Is it silent? That’s a shame... I’m going to go out on a limb and suppose that if there is an Hourglass that works using sand, then there must be a water clock. Isn’t it also called a Clepsydra? Maybe you can try and find one?
Completed: So, this is a water clock? How does it work? Does someone stand there with a jar and pour water into it? No? Oh, I see, they put them by a source of water... Now I understand.