A dumpy level was set up at the midpoint between two pegs A and B; 50 m apart and the staff readings at A and B were 1.22 and 1.06. With the level set up a A; the readings at A and B were 1.55 and 1.37. The collimation error per 100 m length of sight is
1.0.02 m inclined upwards
2.0.04 m inclined downwards
3.0.04 m inclined upward
4.none of these.
Posted Date:-2021-03-26 00:54:39