Computer · Levelling
The height of instrument (HI) in levelling is computed using which of the following equations?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1HI = Elevation of Bench Mark + (Back sight - Fore sight)
- 2HI = Fore sight + Elevation of Bench mark
- 3HI = Back sight + Elevation of Bench mark✓
- 4HI = Fore sight + Back sight
Correct answer
HI = Back sight + Elevation of Bench mark
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