They offer two models as kits or as plans -- The Ascent (top) and The Serpentine (bottom). Honestly, I can't decide which one I like better. They are both fascinating and beautiful.
The only non-wooden parts of the clocks are a few screws, some nylon washers, the string, and some metal shot contained inside the weight shell. The clock frame, gears, and all other parts of the clock movement are made of wood!
The clock kits include all components needed to build these wooden clocks. All components are fully machined -- no cutting or drilling is required. No special tools or skills are required to assemble the clock kits. You will need a screwdriver, hammer, wood glue, and sandpaper -- but that's it.
Under fairly even environmental conditions, these clocks will maintain accuracy to within one minute over the course of several days to a week.
Visit Wooden-Gear-Clocks.com to learn more about these wooden mechanical clocks.