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Prof. A. Graham Bell's induction-balance for ascertaining the location of a bullet in a human body / from a sketch by William A. Skinkle. | Library of Congress
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DEH Induction Balance :: David Edward Hughes - Life and Discoveries
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12. Original schematic of Induction Balance used by D.E. Hughes to... | Download Scientific Diagram
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DEH Induction Balance :: David Edward Hughes - Life and Discoveries