Local Attraction in Compass Surveying | Elimination methods | Magnetic field of Earth

Correcting observation for Local attraction – YouTube

Local attraction & Compass Surveying Local attraction is the phenomenon by which the magnetic needle is constantly prevented to point towards the magnetic north at a place. This is because that these magnetic compass is influenced by other magnetic objects at that locality such as wires carrying electric current, rails, steel and iron structures, steel … Read more Local Attraction in Compass Surveying | Elimination methods | Magnetic field of Earth

Compass Surveying| Types of Compass | Advantages & Disadvantages of Compass Surveying | Example

Prismatic compass ( brasscompass.com)

Compass surveying Compass surveying is the branch of surveying in which the position of an object is located using angular measurements determined by a compass and linear measurements using a chain or tape. Compass surveying is used in following circumstances: If the surveying area is large, chain surveying is not adopted for surveying rather compass … Read more Compass Surveying| Types of Compass | Advantages & Disadvantages of Compass Surveying | Example