What error results from curvature and refraction

Reference no: EM131147006

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

20, 225; 50, 195; 40, 135; 30, 250 ft.

Reference no: EM131147006

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