What is the main benefit of establishing a Grid Meridian?

The main benefit of establishing a Grid Meridian is that it enhances the accuracy of surveying. A Grid Meridian serves as a reference line from which angles and distances can be measured. By maintaining a consistent, theoretical framework for measurements, surveyors can minimize discrepancies caused by the earth's curvature, geographical distortions, or local variations. This provides a more precise orientation for the survey and allows for accurate plotting of points on a map or chart.

Additionally, using a Grid Meridian aids in the alignment of survey data with geospatial information systems (GIS) and ensures that various datasets are compatible and can be accurately integrated. The implementation of a Grid Meridian is crucial for any surveying project that requires a high degree of precision, particularly in larger areas where local variations can significantly impact results.

Other choices focus on different aspects of surveying but do not primarily address the enhanced accuracy that a Grid Meridian provides.