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Q: In levelling height of instrument is
  • A. Reduced level of bench mark + back sight तल चिन्ह का समानीत तल + पश्च दृष्टि
  • B. Reduced level of bench mark + fore sight तल चिन्ह का समानीत तल + अग्र दृष्टि
  • C. Reduced level of bench mark + Intermediate sight/तल चिन्ह का समानीत तल + मध्य दृष्टि
  • D. Back sight + fore sight पश्च दृष्टि + अग्र दृष्टि
Correct Answer: Option A -
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Explanations:

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