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2. Survey marker - Wikipedia

   en.wikipedia.org/wiki/Survey_marker

   Survey markers, also called survey marks, survey monuments, or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying . A benchmark is a type of survey marker that indicates elevation ( vertical position ).

3. 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 ...

4. craigslist - Wikipedia

   en.wikipedia.org/wiki/Craigslist

   This is an accepted version of this page This is the latest accepted revision, reviewed on 2 March 2025. Classified advertisements website Craigslist Inc. Logo used since 1995 Screenshot of the main page on January 26, 2008 Type of business Private Type of site Classifieds, forums Available in English, French, German, Dutch, Spanish, Italian, Portuguese Founded 1995 ; 30 years ago (1995 ...

5. 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 ...

6. 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.

7. Cadastral surveying - Wikipedia

   en.wikipedia.org/wiki/Cadastral_surveying

   A cotton spindle spike in Tel Aviv pavement, used as a marker for public area cadastral surveying. Cadastral survey monuments can be either natural or artificial. Natural monuments are things such as trees, large stones, and other substantial, naturally occurring objects that were in place before the survey was made and are very unlikely to be ...