Hickok 539C Tube Tester Manual Supplementary Tube Data




For sale is reprint of Hickok 539C Tube Tester manual. Manual 15 pages long and includes 11×17 foldout of Circuit Diagram. 

Manual comes with 4 pages of Ballast Tube Data, Part list and Operating Instructions. Manual is dated 1961. manual also includes 7 pages of Supplementary Data for Obsolete Tube Types.