G. B. Airy Triangulation

G. B. Airy Triangulation was a survey method developed in the 19th century to accurately measure large distances and locations, particularly used to map the Earth’s surface. It involves forming a triangle with known points and measuring angles between them using precision instruments. By knowing the length of one side and the angles at each vertex, surveyors can calculate the entire triangle’s dimensions. Repeating this process across multiple interconnected triangles allows for precise plotting of extensive areas. This method was instrumental in creating detailed maps and establishing accurate geographic positions in an era before modern electronic measurement tools.