Computer · Surveying

Which of the following errors in a theodolite can be eliminated only by careful levelling with respect to the altitude bubble, provided it is in proper adjustment?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Error due to non-parallelism of the axis of the telescope level and line of collimation
2Error due to the line of collimation not being perpendicular to the horizontal axis
3Error due to imperfect adjustment of the vertical circle vernier✓
4Error due to imperfect adjustment of plate levels

Correct answer

Error due to imperfect adjustment of the vertical circle vernier

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