Tympanometers | Equipment & Auction Search Welch Allyn MicroTymp 2 Portable Tympanometric Instrument 23640 0 bids $49.00 USD GSI Grason-Stadler Audera Tympanometer 2001-97XX 0 bids $49.99 USD GSI Grason-Stadler TympStar Middle Ear Analyzer 2000-97XX 7 bids $61.00 USD Welch Allyn 71123 Microtymp Tympanometer 0 bids $250.00 USD Create an auction ad and attract more bidders to your sale Get Started