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A BS of 5.43 ft is taken on a level rod at a 120-ft distance, and a FS of 8.76 ft is taken on the rod held 1,100 feet away.(a) What is the error caused by the Earth’s curvature and atmospheric refraction?
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A BS of 5.43 ft is taken on a level rod at a 120-ft distance, and a FS of 8.76 ft is taken on the rod held 1,100 feet away.(a) What is the error caused by the Earth’s curvature and atmospheric refraction?(b) What is the correct difference in elevation between the two points?

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A BS of 5.43 ft is taken on a level rod at a 120-ft distance, and a FS of 8.76 ft-example-1
User Emzaw
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