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National Survey Day – April 10
April 12 , 2020
1494 days
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- This day has a special significance in the History of Surveying.
- On this day the Major William Lambton started the GTS (Great Trigonometrical Survey) and the work of measurement of Great Arc from St. Thomas Mount in Chennai to foothills of Himalayas, on 10th April, 1802.
- The Great Trigonometrical Survey was a project which aimed to measure the entire Indian subcontinent with scientific precision.
- The Survey of India is India's central engineering agency in charge of mapping and surveying.
- Set up in 1767 to help consolidate the territories of the British East India Company, it is one of the oldest Engineering Departments of the Government of India.
- It is headquartered at Dehra Dun.
- It works under the Department of Science and Technology.
- The slogan of the organization is "We know every inch of the nation, because we map every inch of it".
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