Grason Stadler GSI-33 V2 Tympanometer. This unit has been fully tested, and is operational. This unit is clean, display is bright and clear, pump is tight and printout is clear. The item "Grason Stadler GSI-33 V2 Tympanometer Tested, Working" is in sale since Wednesday, November 02, 2016. This item is in the category "Business & Industrial\Healthcare, Lab & Life Science\Medical Instruments\Exam & Diagnostic\Other Diagnostic Instruments".The seller is "techtrader-worldwide" and is located in Paris. This item can be shipped worldwide.