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 screwsI have been asked this question in an interview for job.Question is taken from Equipments Used in Levelling topic in division Basic Surveying of Basic Civil Engineering

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 screwsI have been asked this question in an interview for job.Question is taken from Equipments Used in Levelling topic in division Basic Surveying of Basic Civil Engineering
Answer» The correct choice is (a) Foot SCREWS The explanation: There is a TUBE and bubble is enclosed in it. Using 3 foot screws, the bubble is centralised. Once it is stable, the level is SAID to have maintained a horizontal line of SIGHT.

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