Computer · Levelling
Which of the following principles correctly applies to a continuous levelling operation?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The second sight on any change point is a foresight.
- 2The first sight on any change point is a backsight.
- 3The line of levels commences with a backsight and closes with a foresight.✓
- 4The line of levels commences with a foresight and closes with a backsight.
Correct answer
The line of levels commences with a backsight and closes with a foresight.
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