Among Replogle's most popular models, the Explorer uses striking colours to separate the countries, states and major provinces of the world across a 12" blue-ocean ball carrying over 4,000 place names and political boundaries. Raised-relief embossing reveals the main mountain ranges in three dimensions. A gold-painted metal base and numbered semi-meridian mark the degrees of latitude. A genuinely good STEM teaching tool for classrooms and home learning alike.