2792Civil EngineeringMedium
A’level line’is a________?
Aline parallel to the mean spheriodal surface of earth
Bline passing through the center of cross hairs and the center of eye piece
Chorizontal line
Dline passing through the objective lens and the eye-piece of a dumpy or tilting level
Correct answer
A. line parallel to the mean spheriodal surface of earth
Explanation
The correct answer is line parallel to the mean spheriodal surface of earth.