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Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 3 (Q.No. 34)
Surveying
34.
For orientation of a plane table with three points A, B and C, Bessel's drill is
Align b through a and draw a ray towards c, align a through b and draw a ray towards c, finally align c through the point of intersection of the previously drawn rays
Align c through a and draw a ray towards b, align a through c and draw a ray towards b, finally align b through the point of intersection of the previously drawn rays
Align c through b and draw a ray towards a, align b through c and draw a ray towards a, finally align a, through the point of intersection of the previously, drawn rays
In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.
Sabin Chaudhary said:   1 year ago
Anyone, please explain this.
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