Portland Navigation Protraction 250mm Blundell Harling png Locations within this Map117 Mile Locations within this Map117 Mile Post Markyat Railway Station Kay Bore Branson Yard Gibbaway Bore Holywater Yard Fish Tank Bore Norris Bores East Bore Marryat Creek The Marryat Halfway Hole Ilykuwaratja Wallaby Rock Holy Water Well Agnes Creek Marryat Siding Overflow Tank Mundy Dam Independence Bore Eateringinna Creek Ian Bore Noolperlunna Hill Marryat Dam Number Fifteen Bores Tea Leaf Bank Kim Dam Mary Bore Stock Well Ayers Range Itirinyanya Norris Yard Coultys Hole Bore Bruce Bore East Yard Garden Bore Marryat Yard Overflow Bore Holy Water Yard Rustys Bore Alcurra Creek Holywater Well Kangaroo Well Sundown Outstation Branson Well Mount Howe De Rose Hill Mother Yard Over Flow Bore Doug Well Sundown Well Guy Fawkes Bore Mother Well Haven Well One Tree Homestead Easteringinna Creek The Agnes 1 Wongarra Bore Mount Lionel Mount Reeder Nichols Mount Samson Security Bore Wackilina Well Douglas type square pattern navigational protractor Can also be used as a simple parallel rule and plotter