This map is part of a map series released by Geoscience Australia, the national agency for geospatial information. The series covers the whole of Australia at a scale of 1:250 000 (1cm on a map represents 2.5 km on the ground) and comprises 513 maps. This is the largest scale at which published topographic maps cover the entire continent. Note - you are purchasing the single paper map sheet called SI5413 Barker, NOT the whole collection of 513 maps.