Mathematics · Surveying - Levelling
In levelling surveys, which of the following expressions represents the correct arithmetic check for the height of instrument method?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1ΣBS - ΣFS = First RL - Last RL
- 2ΣFS - ΣBS = Last RL - First RL
- 3ΣBS - ΣFS = Last RL - First RL✓
- 4ΣFS - ΣBS = First RL - Last RL
Correct answer
ΣBS - ΣFS = Last RL - First RL
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