The Topo50 map series provides topographic mapping for the New Zealand mainland and Chatham Islands at 1:50,000 scale. Find and download maps to view onscreen or print. At a scale of 1:50,000, Topo50 maps show geographic features in detail. They are useful for a wide range of activities such as local navigation by vehicle or on foot, locality area planning and study of the environment. Used by a wide variety of groups, Topo50 is the official topographic map series used by New Zealand emergency services.