Which of the following errors can be neutralised by setting the level midway between the two stations?

- 1
  
  Error due to curvature only
- 2
  
  error due to refraction only
- 3
  
  Error due to both curvature and refraction
- 4
  
  none of the above

Display Comments

Leave a comment

Login at first then you can submit comment. Click here to login.