Portland Navigation Triangle 200mm Blundell Harling 100000 Locations within this MapSpence Waterhole Locations within this MapSpence Waterhole South Woodforde Dam Nellies Dam Eliza Creek Good Friday Dams Smith Dam Bobby Creek Tadpole Creek North Eliza Hut Four Wells Carrapateena Hill Woodforde Dam Tiffin Hill Tadpole Dam Second Tank Shore Hill Woodforde Hut Lake Torrens Welcome Waterhole Sketching Pile A Tiffin Tank Anzac Dam North Eliza Dam Noltenius Hill Carrapateena Arm Goodwin Well Smith Hill Strawbridge Pipeline Tanks South Eliza Hut Carrapateena Wells Tadpole Well Gypsum Pans Hatch Hill Two Mile Swamp Dam Menalera Woodforde Creek Crystal Dam Woodforde Hill Shore Hill Dam Birthday Sub Station North Woodforde Creek North Tiffin Hill Woodforde Wells Hard Well Gum Waterhole Andamooka Ranges Match Hill Locations within this MapElroy Creek Yard Oolrui Creek Oolrui Creek Yard Scotty Yard Manufactured from strong acrylic Features protractor markings and compass points with reciprocals in red