This is a Biomedical Engineering trainee task, to identify the parts of ENT diagnostic set, troubleshoot the faults and remedy, perform visual inspection and test the functionality of the set.
ENT diagnostic set comprises of otoscope head, ophthalmoscope head, laryngeal mirrors, bent arm illuminator, battery handle, tongue depressors with holder, nasal speculum and other set have spare bulb.
NB: it does not come with type "C" size battery you buy it as a separate item from supermarket.