What is a Tympanometer used for?
INVENTIS TYMPANOMETERS and RESONANCE TYMPANOMETERS measure the function of the middle ear.
Inventis Timpani HANDHELD TYMPANOMETER / SCREENING AUDIOMETER

Timpani allows performing only the screening tympanometry using 226 Hz probe tone. The optional available licenses are:
1 kHz probe tone license
To conduct tympanometry also on children
$2,590.00
https://4medtech.com/shop/audiometers/audiometers-tympanometerstympanometers/timpani/
Resonance r36m Tympanometer

The Resonance R36M Middle Ear Analyzer is a flexible clinical device for Tympanometry acoustic reflex measurement. Compact dimensions, an ergonomic design and a bright 7” LCD display: r36m has been expertly engineered to respond to the needs of ENT and Audiology professionals in both clinical settings and at house calls. The design is user-friendly and allows the device and accessories to be safely transported in a durable luggage-grade padded carrying case.
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https://4medtech.com/shop/audiometers/audiometers-tympanometerstympanometers/r36m/