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Monaural stethoscopes, circa 1870

Monaural stethoscopes, circa 1870

C019/8137

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50.0 MB (2.5 MB compressed)

5173 x 3378 pixels

43.7 x 28.7 cm ⏐ 17.2 x 11.3 in (300dpi)

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Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Three monaural stethoscopes, one in fruitwood (top), on in white metal (left), and one in ebony (right). French physician, Rene Theophile Hyacinthe Laennec invented the monaural stethoscope in 1816. This design, which is essentially a wooden cylinder with a hole bored out down the centre, was the earliest form of diagnostic device for listening to internal sounds of the body (auscultation). These are English and date from around 1870.

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