Which of the below is used to make a line of sight horizontally in a l

1.	Which of the below is used to make a line of sight horizontally in a level?
A.	Foot screws
B.	Levelling head
C.	Telescope
D.	Tangent screws
Answer» B. Levelling head

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Which of the below is used to make a line of sight horizontally in a level?

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