Knight's binaural stethoscope
Among the old stethoscopes preserved in the Musée d'Histoire de la Médecine of the Université Paris Descartes in Paris you can see on the right of this picture a binaural one from the 1880s of the model designed by Frederick Irving Knight, an evolution of the original model invented by George Phillip Cammann.
- Photo by Azzurra Coppari (November 2025)
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