unit A dumpy level was set up at c' actly mod way betweRD two pegs A and Bloom apart. The readings on the statt hen beld on the peop А and e were 2250 and 2.025 respectively the instrument was then moved and setup at a posnt oon the line BA produced and 20m from A. The respective staff readin 1.875 and 1.650 were on A and B calculate the start readings on A and B to give a horizontal core of sight?calculate.
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