Orrery Simulator
From: http://curiousminds.co.uk/product_info.php/products_id/711?osCsid=faddec58c230a9bbbaf2ef824b5860dd
£270
Internally gear-driven motor revolves planets around the sun in their relative orbits. Users can manually adjust planets according to the planet position table with the 360° scale on the base. Exceptionally quiet running and includes a lesson plan on orbit and speed.