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• If a plumb bob always hangs 100% true level vertically, does placing 2 plumb bobs from 1 mile up and 100 feet apart prove the earth is flat? - Quora

If a plumb bob always hangs 100% true level vertically, does placing 2 plumb bobs from 1 mile up and 100 feet apart prove the earth is flat? - Quora

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If a plumb bob always hangs 100% true level vertically, does

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