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  2. Benchmarking (hobby) - Wikipedia

    en.wikipedia.org/wiki/Benchmarking_(hobby)

    Benchmarking, also known as benchmark hunting, [1] is a hobby activity in which participants find benchmarks (also known as survey markers or geodetic control points). The term "benchmark" is used only to refer to survey markers that designate a certain elevation , but hobbyists often use the term benchmarks to include triangulation stations or ...

  3. Survey marker - Wikipedia

    en.wikipedia.org/wiki/Survey_marker

    NGS Survey Data Explorer is an interactive map that will find markers in a selected location. Marker types identified. Marker links to data sheet. This website provides a state-by-state mapping of NGS survey marks on to Google Maps, enabling one to search for these marks visually. Description and history of the types of markers used in the ...

  4. Public Land Survey System - Wikipedia

    en.wikipedia.org/wiki/Public_Land_Survey_System

    Monumentation is the establishment of permanent on-the-ground objects that mark exact locations of surveyed points and lines. They are the legally binding markers used for setting property lines and as such are the culminating work of any survey. They consist of both corner monuments as well as nearby accessory objects that "witness" to them.

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

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

    Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.

  6. Benchmark (surveying) - Wikipedia

    en.wikipedia.org/wiki/Benchmark_(surveying)

    An Ordnance Survey cut mark in the UK Occasionally a non-vertical face, and a slightly different mark, was used. The term benchmark, bench mark, or survey benchmark originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately ...

  7. Cadastral surveying - Wikipedia

    en.wikipedia.org/wiki/Cadastral_surveying

    The initial survey operations are concentrated on locating monuments. Property corners may be marked by iron pins, metal survey markers, iron pipes, and other features possibly establishing a line of possession will be located. When the approximate positions for the boundaries of the property have been located, a traverse is run around the ...

  8. Position resection and intersection - Wikipedia

    en.wikipedia.org/wiki/Position_resection_and...

    Position resection and intersection are methods for determining an unknown geographic position (position finding) by measuring angles with respect to known positions.In resection, the one point with unknown coordinates is occupied and sightings are taken to the known points; in intersection, the two points with known coordinates are occupied and sightings are taken to the unknown point.

  9. United States National Grid - Wikipedia

    en.wikipedia.org/wiki/United_States_National_Grid

    Develop a standardized Emergency Location Marker (ELM) which can be used anywhere in the nation in a variety of scenarios, Align the marking system with established federal and state cartographic and signage standards, Ensure the format leverages GPS instead of requiring constant updating of Computer Aided Dispatch (CAD) systems,

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