Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 2 (Q.No. 40)
40.
When the bubble of the level tube of a level, remains central
line of sight is horizontal
axis of the telescope is horizontal
line of collimation is horizontal
geometrical axis of the telescope is horizontal.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
10 comments Page 1 of 1.

Vilasagaram Rajesh Kumar said:   3 years ago
I agree, it should be option B.

Athens Yadav said:   4 years ago
Line of collimation is only horizontal but line of sight is inclined or horizontal.

Jatin said:   5 years ago
Option A and C are not the same. When the line of sight is horizontal it is called the line of collimation.

Kishor gurjar said:   5 years ago
Line of sight is horizontal is the correct answer.

Ujjwal said:   5 years ago
The Answer should be axis of bubble tube.

Ref: R .Agor.
(1)

Aditya said:   7 years ago
Yes, you are right, Agree @Wajid Afridi.

Sam said:   7 years ago
Why not option B?
(1)

Wajid afridi said:   7 years ago
Line of collimation is only horizontal in levelling operation, in case of finding angles, we call it line of sight, not line of collimation.
(2)

Divid said:   7 years ago
Yes, I too think they are one and the same.

MD Irshad alam said:   8 years ago
The line of sight and line of collimation is same.

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