State Plane Coordinates 1983 (SPC83) are published in which units of measure?

State Plane Coordinates 1983 (SPC83) are primarily published in units of feet. The State Plane Coordinate System is designed for mapping and positional accuracy for regional and local areas across the United States. It employs different units of measure depending on the specific state's coordinate system. For many states, the feet measurement was chosen to provide a familiar unit to users, particularly in the context of land surveying and engineering, where feet have traditionally been the standard.

While other countries and certain contexts utilize meters, the SPC83 specifically uses feet in the majority of its stateside applications. This selection enhances usability and consistency with pre-existing surveying practices. Therefore, the correct understanding of the unit of measure for SPC83 is feet, distinguishing it from other measurement systems even when they have their applications in different contexts or regions.