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Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 6 (Q.No. 24)
Surveying
24.
Pick up the correct statement from the following :
The horizontal angle between magnetic meridian and true meridian at a place is called magnetic declination or variance of the compass
the imaginary lines which pass through points at which the magnetic declinations are equal at a given time are called isogonic lines
the isogonic lines through places at which the declination is zero are termed agonic lines
all the above.
Answer: Option
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