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Learn about the history, organisation, responsibilities and maps of the Survey of India, the central engineering agency in charge of mapping and surveying the country. Find out how it measured Mount Everest, named geographical features and predicted tides.
A comprehensive overview of the history and development of map making in India from prehistoric times to the modern era. Learn about the influences, innovations, and challenges of Indian cartography across different periods and regions.
A map series is a group of maps with the same scale and specifications, covering a large area in several sheets. Learn about the concept, publication forms, sheet network designs, numbering and naming systems of map series.
A topographic map is a detailed map that shows the relief features of the land, such as hills, valleys, and rivers. It uses contour lines, symbols, and colors to represent the elevation and other characteristics of the terrain.
In 1875, the decision was taken that the Survey budget should be reduced from 240,000 to 200,000 pounds. This resulted in a reorganization under Surveyor-General Colonel J.T. Walker to amalgamate the Great Trigonometrical, Topographical and Revenue Surveys into the Survey of India. [9] Survey towers used by George Everest to elevate the instruments
NavIC is an autonomous regional satellite navigation system that provides accurate real-time positioning and timing services in India and nearby regions. It consists of a constellation of eight satellites in geostationary and inclined geosynchronous orbits, and offers two levels of service: standard and restricted.
OpenStreetMap (OSM) is a collaborative project that collects and distributes data for maps, navigation and other applications. Learn about its history, data structure, licensing, features and applications from the online encyclopedia.
Johnson's map of the Aksai Chin and Kunlun region (distorted due to equipment fault). His proposed boundary line is marked in dark green. In May 1865, W. H. Johnson of the Survey of India was commissioned to undertake a survey of "beyond and to the north of the Chang Chenmo valley", as a part of the Kashmir Series. [8]