2019-03-272019-03-272004http://hdl.handle.net/20.500.12091/509Source: https://www.welchallyn.com/en/service-support/document-library.html#parameters=searchTerm=en-USAudiometerUMDNS: 10228AudioScopeTM / AudioScope 3 Screening Audiometers Models: 23020, 23000, 23040 Service ManualArticle