Endoscopes (Riester ประเทศเยอรมัน)

Sinuscopes no.3904, 3905,3906,3907	Tele-Laryngo-Pharyngoscope no.3930	Laryngo-Pharyngoscope no.3931
Naso-Pharyngoscope no.3900	Otoscope no.3920	ri-cam no.3941