Pocket ophthalmoscope, without case, fitted with 8 lenses in rotating housing, and mirror, unsigned, European, 1850-1911 Pocket ophthalmoscope, without case, fitted with Optics 1850-1911
Liebreich's ophthalmoscope, cased, by Thomas Armstrong and Brother, of Liverpool and Manchester, 1880-1920, with 7 lenses Liebreich's ophthalmoscope Ophthalmology 1880-1920