UPSC Civil Service Exam Questions - Civil Engineering Questions and Answers

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Discussion :: UPSC Civil Service Exam Questions

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, 2 and 3

1, 2 and 4

2 and 3

1, 3 and 4

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