5 stethoscopes. A-similar to Truabe's, cf. Krohne & Sesemann, 1879, p.108, no.20. B- Fergusson or Stoke's type. C- similar to Traube's. D- probably French, similar to Traube's.

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: 5 stethoscopes. A-similar to Truabe's, cf. Krohne & Sesemann, 1879, p.108, no.20. B- Fergusson or Stoke's type. C- similar to Traube's. D- probably French, similar to Traube's. Wellcome Collection. Source: Wellcome Collection.