Successive plus and minus sights taken on a downhil line of


Successive plus and minus sights taken on a downhil line of levels are listed below. the values represent the horizontal distances between the instrument and either the plus or minus sights. What error results from curvature and refraction?

(50,75; 75,150; 25,150; 30,200)ft.

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Civil Engineering: Successive plus and minus sights taken on a downhil line of
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