Vibrophone Audiometry Ear Tube hearing aid
€ 175.-
Vibrophone Audiometry Ear Tube hearing aid
Circa
ca 100 years old
Description
Vibrophone Audiometry Ear Tube
A rare device designed to test bone conduction. When inserted in the ear the small metal dumbbell is struck against the rim of the ear tube and causes the disk to vibrate.a superb little instrument!
Measurements box 7 x 4,5 x 2 cm
Ask the Dealer
Dealer information
Early Science
Early Science antiques was founded in 1978 by Fred de Vree based in the Netherlands where I can also be visited by appointment. I have been active for 4 decades as an antiqair and auctioneer, the last 20 years of which are specialized in scientific antiques. I visit collectors and fairs in many European countries. looking for special items please feel free to contact me by Phone or email ,if you need any information on my listed items or something you are looking for 0031653132842 [email protected]
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