Ear trumpet from the 19th century. This device was designed to help the hard of hearing. The earpiece is at right,with the horn at left. It worked by amplifying sound as it passed from the horn to the earpiece | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CCI Archives |
Taille de l’image : | 2300 px × 3824 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |