Question: A dumpy level was set up midway between two pegs 80 m apart. The readings on the staff at the two pegs were 3.2

A dumpy level was set up midway between two pegs 80 m

A dumpy level was set up midway between two pegs 80 m apart. The readings on the staff at the two pegs were 3.2 and 3.015 m respectively. The instrument was then moved by 20 m ahead of the second peg in line with two pegs. The respective staff readings were 2.825 and 2.69 m. Calculate the staff readings on the two pegs to provide horizontal line of sight.

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