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.

Print shows a diagram of the induction-balance device invented by Alexander Graham Bell, with parts labeled.

Illus. in: Frank Leslie's illustrated newspaper, v. 52, no. 1351 (1881 August 20), p. 417.

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01/01/1881

Library of Congress

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