Local attraction in compass surveying may exist due to

QuestionsCategory: Civil EngineeringLocal attraction in compass surveying may exist due to
VideRime Staff asked 5 years ago

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

Surveying MCQs Set-4