Computer · Surveying and Levelling
Which of the following errors cannot be eliminated by the operation of reciprocal levelling?
- 1Errors due to atmospheric refraction
- 2Errors due to non-parallelism of the line of collimation
- 3Manual mistakes in taking levelling staff readings✓
- 4Errors due to the Earth's curvature
Correct answer
Manual mistakes in taking levelling staff readings
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