Which of the following errors can be eliminated by taking mean of both face observations?

- 1
  
  error due to imperfect graduations
- 2
  
  Error due to eccentricity of verniers
- 3
  
  error due to imperfect adjustment of plate level
- 4
  
  error due to line of collimation not being perpendicular to horizontal axis

Display Comments

Leave a comment

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