Local attraction in compass surveying may exist due to
A) incorrect levelling of the magnetic needle
B) loss of magnetism of the needle
C) friction of the needle at the pivot
D) presence of magnetic substances near the instrument
Correct Answer:
Verified
Q15: For accurate work, the steel band should
Q16: The length of a chain is measured
Q17: Select the incorrect statement.
A)The true meridians at
Q18: If the true bearing of a line
Q19: In the prismatic compass
A)the magnetic needle moves
Q20: For a line AB
A)the forebearing of AB
Q22: In the quadrantal bearing system, a whole
Q23: The prismatic compass and surveyor's compass
A)give whole
Q24: The horizontal angle between the true meridian
Q25: A negative declination shows that the magnetic
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