Phonendoscope dating from around 1900,England. This device was used in the early 20th century for listening to internal sounds of the body (auscultation). The sounds would be intensified by resonation of the two circular plates attached to the bell-shaped receiver | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 5503 px × 3588 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |