Portland Navigation Triangle 200mm Blundell Harling 100000 Locations within this MapBinburi Creek Locations within this MapBinburi Creek Binburie Black Rock Carcara Cobbonderre Creek Eight Mile Creek Florida Hyde Park Creek Manabudgery Waterhole Mayne Melrose Creek Middle Creek North Creek Potewko Rocky Waterhole Spring Creek Stockyard Creek Tonkoro Tonkoro Creek Goneaway National Park McKenzie Creek Eden Creek Tally Ho Well Limestone Rockhole Ju Ju Rockhole Dunham Towers Out Station Manabudgeri Waterhole Horse Creek Locations within this MapYule Patches Yaruman Island Yakimoan Island Wori Wori Patches Webb Patch Ward Rock Waia Islet Waia Island Ululina Island Uli Bonna Bonna Passage Ui Gari Passage Ulgari Passage Taval Rock Tauara Shoal Taifaur Islet Taifaur Island Su Waian Point The Sunken Barrier Sullivan Patch Robinson Anchorage Reiga Shoals Power Patch Pornani Passage Pori Passage Panua Keikeisa Islet Panua Keikeisa Island Pana Numara Island Panantanian Island Sharp Island Panangaribu Island Pana Mun Passage Pana Kuba Island Pana Krusima Island Earle Island Paba Baga Nunuan Islet Nunuan Island Myriad Shoals Musters Patches Moturina Island Mewstone Island Motorina Island Migemma Gemma Passage Manbuan Point Mabneian Islet Mabneian Island Louisiade Archipelago Leiga Islet Leiga Island Laiwan Islet Laiwan Island Kuanak Island Abaga Gaheia Island Kivi Kivi Passage Hoba Bay Hanover Rock Hana Manawi Point Gowan Passage Gilia Islet Gilia Island Gillia Islet Gigila Island Gedge Shoals Emerald Shoal Einamu Islet Einamu Island Dayman Banks Dawson Banks Conflict Patches The Calvados Chain Brierly Reef Brierly Reefs Bramble Patch Bonna Wan Islet Bonna wan Island Boi U Passage Boiu Pass Bobo Eina Island Huxley Island Beagle Rock Bahil Passage Bagaman Island Stanton Island Aurobu Islet Aurobu Island Ara Gum Gum Passage Ara Gum gum Pass Anchor Patches Humuan Island Features protractor markings and compass points with reciprocals in red Can be used in pairs as a Parallel Rule