Great Trigonometrical Survey

The Great Trigonometrical Survey was a monumental survey project conducted in India during the 19th century, aimed at measuring the whole country's geography accurately. Initiated by the British, it involved extensive triangulation methods to determine the locations and heights of mountains and other features. The survey helped create precise maps and was instrumental in understanding India's topography, contributing to advances in geodesy and navigation. One of its significant achievements was the measurement of the meridian arc from the southern tip of India to Nepal, which laid the groundwork for modern surveying techniques and scientific research in the region.