Discussion :: Surveying
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Pick up the correct statement from the following :
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A.
the lines of sight while observing back sight and fore sight lie in the same horizontal plane |
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B.
the staff readings are measurements made vertically downwards from a horizontal plane |
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C.
the horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis |
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D.
all the above. |
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Answer : Option D
Explanation :
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