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Chapter: 9th Social Science : Geography: Mapping Skills

Survey (Map as a Tool)

Surveying is done to measure the angle, direction, area, height and distance of an object or place on the surface of the earth using instruments.

Survey

Surveying is done to measure the angle, direction, area, height and distance of an object or place on the surface of the earth using instruments. Surveying techniques are used to obtain the field data and to prepare maps. A knowledge of surveying helps one in map-making, particularly in the preparation of physical maps.

Geographers mainly use Chain, Prismatic compass, Plane table, Dumpy level, Abney level, Clinometre, Theodolite, Total Station and GNSS to measure the distance, angle, altitude and position of the area of survey.



 

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