This is a vintage Bendix Model 594 Hygro-Thermograph Vintage Humidity Air Temperature Recorder. Vintage instrument used at IBM Corporation. Great piece measuring 12″ x 8 1/2″ x 5 1/2. The item “Bendix Model 594 Hygro-Thermograph Vintage Humidity Air Temperature Recorder” is in sale since Sunday, November 01, 2015. This item is in the category [...]