I've seen this instrucments a lot of times when my little girl gets a check for having a fever. The doctor often use this to check her ears for any sign of infection. I only know that this deviceis called an
otoscope. Thereis a light that is able to see the outer ear and middle ear and look through ear canal with lens.It can be powered by electricity or battery and mounted at the wall of the room where the doctor examines the patient.
