Which of the following errors can be eliminated by taking mean of bot face observations ?
A. error due to imperfect graduations
B. error due to eccentricity of verniers
C. error due to imperfect adjustment of plate levels
D. error due to line of collimation not being perpendicular to horizontal axis
Answer: Option D
Related Questions on Surveying
Which of the following methods of contouring is most suitable for a hilly terrain?
A. Direct method
B. Square method
C. Cross-sections method
D. Tachometric method
A. 750 mm × 900 mm
B. 600 mm × 750 mm
C. 450 mm × 600 mm
D. 300 mm × 450 mm
A. 22° 30'
B. 23° 27'
C. 23° 30'
D. 24° 0'
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