What is another name for elevation reference marks used by surveyors?

Elevation reference marks used by surveyors are commonly referred to as bench marks. These benchmarks serve as fixed points of known elevation that are established to help surveyors determine the height of other points in relation to a specific reference. Bench marks are crucial in topographic mapping, floodplain management, and construction projects, as they ensure accurate measurements of elevation across varying terrains.

While reference points, geodetic markers, and control points may also be related to surveying, they have different specific meanings and uses in the field. For instance, geodetic markers typically refer to points with precise latitude and longitude coordinates established for geographical reference, while control points are used in geospatial sciences to provide a reference for locating other points. Bench marks, however, are directly tied to elevation measurements, making them the appropriate term in this context.