Variation of Magnetic Declination | Isogonic and Agonic Line in Magnetic Declination |Compass Survey 

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Variation of Magnetic Declination | Isogonic and Agonic Line in Magnetic Declination |Compass Survey
in this video we discuss about various of Magnetic Declination which is the part of topic Magnetic Declination in chapter Compass Traversing Survey and subject surveying in civil engineering.
Variations of Magnetic Declination is of four types according to thier reasons of happening
1. Secular Variation
2. Annul Variation
3. Diurnal Variation
4. Irregular Variation
also
important topic such as
1. Isogonic line
2. Agonic line
this video helps students to understand the concept of Variations of the Magnetic Declination after this video students of diploma and btech civil engineering are able to understand about Variations of Magnetic Declination. also this video contains two terms isogonic and agonic line which also part of Magnetic Declination.
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