The Survey of India is India's central agency in charge of mapping and surveying. Set up in 1767 to help consolidate the territories of the British East India Company, it is the Government of India's oldest department. The Survey of India's distinguished history includes the handling of the mammoth Great Trigonometric Survey under William Lambton and George Everest. With its headquarters at Dehra Dun, the Survey today has 18 divisions ranging from the prediction of tides to aerial survey. The word mapping has several senses: In mathematics and related technical fields, it is some kind of function: see map (mathematics). ... Surveyor at work with a leveling instrument. ... 1767 was a common year starting on Thursday (see link for calendar). ... The British East India Company, sometimes referred to as John Company, was a joint-stock company of investors, which was granted a Royal Charter by Elizabeth I on December 31, 1600, with the intent to favour trade privileges in India. ... The Government of the India, officially referred to as the Union Government, and commonly as Central Government, established by the Constitution of India, is a union federal republic of 28 states and 7 union territories. ... Each millennium had thrown up passion for doing something unique. ... William Lambton (1756-1823) was a British soldier, surveyor, and geographer. ... Photograph of Everest Colonel Sir George Everest (July 4, 1790 - December 1, 1866) was a British surveyor and geographer, and Surveyor-General of India from 1830 to 1843. ... Dehradun (देहरादून) is a capital city of Uttaranchal state of India nestled between the Himalayas and Shivaliks ranges. ... The tide is the regular rising and falling of the oceans surface caused by changes in gravitational forces external to the Earth. ... Aerial survey is a mehtod of collecting infomation by utilizing aerial photography or from remote sensing technology using other bands of the electromagnetic spectrum such as infrared, gamma or ultraviolet. ...
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