Pick up the correct statement from the following : – McqOptions

MCQOPTIONS

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

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