A line of levels has been run from a bench mark of elevation +125.42 m – McqOptions

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1.	A line of levels has been run from a bench mark of elevation +125.42 m and ends at another bench mark of elevation +125.45 m. The sum of back sights is 17.58 m and the sum of foresights is 17.61 m. The closing error in the survey work is:
A.	-0.06 m
B.	0.03 m
C.	-0.03 m
D.	0.06 m
Answer» E.

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