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Allison's differential binaural stethoscope, probably Englis

Science Museum, London


Free to use with attribution CC BYCredit: Science Museum, London
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The stethoscope is used on the chest or another part of the body to listen to organs such as the heart or lungs. The sounds can help diagnose the patient’s problem. The stethoscope was devised in 1816 by French physician Rene Laennec (1781-1826). It was constructed from a simple hollow tube. This binaural (two ear) example is named after its inventor, Scott Allison. It comes with interchangeable chest pieces. It is made from ivory, metal and rubber. Binaural stethoscopes were conceived as early as 1829. However, effective models were only developed from the 1840s. maker: Unknown maker Place made: England, United Kingdom


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Allison's differential binaural stethoscope, probably Englis. Credit: Science Museum, London. CC BY

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