Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 15 (Q.No. 11)
11.
Which of the following are the fundamental lines of a theodolite ?
1. The vertical and horizontal axes
2. The diagonally opposite screw lines
3. The line of collimation and axes of the plate levels
4. The bubble line of the altitude level.
Select the correct answer using the codes given below:
1. The vertical and horizontal axes
2. The diagonally opposite screw lines
3. The line of collimation and axes of the plate levels
4. The bubble line of the altitude level.
Select the correct answer using the codes given below:
Discussion:
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