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(Solved): If a backsight of 3.54 ft is taken on BM A, elevation 850.48 ft, and a foresight of 7.84
ft is read ...
If a backsight of 3.54 ft is taken on BM A, elevation 850.48 ft, and a foresight of 7.84
ft is read on point X, calculate the height of instrument (HI) and the elevation of point X.