In plane surveying where a graduated staff is observed either with hor – McqOptions

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1.	In plane surveying where a graduated staff is observed either with horizontal line of sight or inclined line of sight, the effect of refraction is to
A.	Increase the staff reading
B.	Decrease the staff reading
C.	Neither increase nor decrease the staff reading
D.	Duplicate the staff reading
Answer» C. Neither increase nor decrease the staff reading

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