Coaxial Pneumatic Otoscope-Ophthalmoscope | Hopkins Medical Products
OtoSim Inc: PneumatoSim
Welch Allyn 23820 Otoscope has been discontinued and superseded by 238-3. <a href="http://www.west-op.com/hilrom-welchallyn-otoscope-238-3.html" title="Welch Allyn MacroView Plus Otoscope">MacroView Plus Otoscope</a>