For those obsessed with all things industrial, the Timing Chain clock is a piece made for you. Just look at it, the thing looks like it was plucked from an Upton Sinclair-era factory machine and adorned with time markers.
Standing 44 inches tall, this wall mounted clock stands leaves its gears and motor exposed and visible, and has number chain hangs 26 inches below the motor (translation: this thing is BIG). Placed on the wall of your home, I like to imagine this $100 piece would be flanked by nothing but wooden crates and steel boxes. [Ponoko]