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  2. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Figure 1. This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS.. The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each.

  3. Public Land Survey System - Wikipedia

    en.wikipedia.org/wiki/Public_Land_Survey_System

    This 1988 BLM map depicts the principal meridians and baselines used for surveying states (colored) in the Public Land Survey System. The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling.

  4. List of map projections - Wikipedia

    en.wikipedia.org/wiki/List_of_map_projections

    United States Coast Survey: Latitude along which scale is correct can be chosen. Parallels meet meridians at right angles. 1963 Latitudinally equal-differential polyconic: Pseudoconical Compromise China State Bureau of Surveying and Mapping Polyconic: parallels are non-concentric arcs of circles. c. 1000: Nicolosi globular: Pseudoconical [4 ...

  5. Category : Meridians and base lines of the United States

    en.wikipedia.org/wiki/Category:Meridians_and...

    Pages in category "Meridians and base lines of the United States" The following 36 pages are in this category, out of 36 total.

  6. American polyconic projection - Wikipedia

    en.wikipedia.org/wiki/American_polyconic_projection

    In the cartography of the United States, the American polyconic projection is a map projection used for maps of the United States and its regions beginning early in the 19th century. It belongs to the polyconic projection class, which consists of map projections whose parallels are non-concentric circular arcs except for the equator, which is ...

  7. Wikipedia:Online maps of the United States - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Online_maps_of...

    Image:Blank US Map with borders.svg, a blank states maps with borders. Image:BlankMap-USA.png, a map with no borders and states separated by transparency. Image:US map - geographic.png, a geographical map. On Wikimedia Commons, a free online media resource: commons:Category:Maps of the United States, the category for all maps with subcategories.

  8. 45th parallel north - Wikipedia

    en.wikipedia.org/wiki/45th_parallel_north

    The 45th parallel defines most of the border between Montana and Wyoming in the United States. Throughout the United States the parallel is marked in many places on highways by a sign proclaiming that the location is halfway between the North Pole and the equator. [3] [4] [N 1]

  9. Fifth principal meridian - Wikipedia

    en.wikipedia.org/wiki/Fifth_principal_meridian

    The Fifth Principal Meridian, also known as the "5th Principal Meridian" and "PM 05", is a principal meridian survey line used in the United States for land claims in the Public Land Survey System (PLSS). It was first surveyed in 1815. The meridian, a north-south line, starts from the old mouth of the Arkansas River and runs north.