Computer · Levelling
तलमापन (levelling) में परिवर्तन बिंदु (turning point) पर लिया गया पहला प्रेक्षण (observation) होता है:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1पश्च अवलोकन (Back sight)✓
- 2अग्र अवलोकन (Foresight)
- 3मध्यवर्ती अवलोकन (Intermediate sight)
- 4अग्र दिक्मान (Fore bearing)
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पश्च अवलोकन (Back sight)
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