Local attraction in compass surveying may exist due to-
Presence of magnetic substances near the instrument
Based on the analysis, the presence of magnetic substances near the instrument is the direct cause of local attraction in compass surveying, as these substances create disturbing magnetic fields that interfere with the Earth's magnetic field, leading to deviations in the compass needle's direction.
Important Questions from Compass Surveying and Theodolite
Which of the following statement is CORRECT for whole circle bearing?
Least count of a theodolite is ________
For measurement of vertical angles through theodolite, the instrument should be levelled with reference to the ________ bubble and the ________ clamp that is used to rotate the telescope in the vertical plane.
The following statements given pertain to theodolite used in surveying. Identify the incorrect statement
The use of Electronic Digital Theodolite attached to a total station is to measure:
