Fun for ages 9 and over. Machined timber ready for self assembly as this Ocean Motion. Glue, parts list, sandpaper and instructions supplied. Systematically piece together the cams, push rods, levers and cranks, the process of which will enhance understanding of the science of mechanics. All it needs is some patience and care which will result in a model that behaves as expected when you crank the handle. These automata can also be painted.