Vintage Bendix Hygrothermagraph Model 594

If ad is showing, its available. Reply with your phone number by email or chat feature for a prompt call back. Description: 1960s to 1980s Bendix Hygrothermagraph, model 594 for recording relative humidity and air temperature data. Made by the the Friez Instrument Division of Bendix Aviation Corp. This one was owned by University of Wisconsin.