page_title: Survey marker
hierarchical_section_title: Survey marker
caption_attribution_description: English: Marker, United States Coast and Geodetic Survey marker embedded in a large rock in front of the Noroton Volunteer Fire Department, Darien, Connecticut.
context_page_description: Survey markers, also called survey marks, survey monuments, survey benchmarks or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying. Informally, such marks are referred to as benchmarks, although strictly speaking the term "benchmark" is reserved for marks that indicate elevation. Horizontal position markers used for triangulation are also known as triangulation stations.
context_section_description: Survey markers, also called survey marks, survey monuments, survey benchmarks or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying. Informally, such marks are referred to as benchmarks, although strictly speaking the term "benchmark" is reserved for marks that indicate elevation.  Horizontal position markers used for triangulation are also known as triangulation stations.
caption: Closeup of a U.S. Coast and Geodetic Survey marker
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