Civil Engineering MCQAE Level Civil Engineering
In reciprocal levelling, errors due to curvature, refraction and collimation are minimized by
SurveyingGeneralMEDIUM
Choose the correct answer
A
observing from both sides of an obstacle
B
setting staff horizontally
C
avoiding backsight
D
using only one staff reading
Correct Answer
A. observing from both sides of an obstacle
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Taking observations from both ends cancels systematic errors over long sights.
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