If there’s one thing I can’t get enough of, it is funny ways to tell time, and this catena wall clock definitely fits the bill. Instead of rotating a set of hands, or lighting a digital display, this clock works by slowly turning a chain that has a set of numbers attached to it. The current time is whatever number is closest to the top. It’s a neat artifact, and could be a good use for an old chainsaw or bike chain that you have laying around. I could also see this being turned sideways, with a set of gears and different chains to represent both the time and the date. [via technabob]