EICO 628 Emission Tube Tester Manual $8.99 Category: EICO Description Description For sale is reprint of EICO Model 628 Emission Tube Tester manual. Comes with Two 11×17″ foldouts of part list and circuit diagram. Manual is 12 pages long, Includes part list, Diagram and maintenance sections. Related products EICO 232 249 Peak-to-peak VTVM Instruction Manual $7.99 Read more EICO 625 Tube Tester Construction Manual $7.99 Read more EICO Model HF-12 Hi-Fi Integrated Amplifier Operating and Construction Manual $9.99 Read more EICO 1050 6V 12V Battery Eliminator and Charger Construction Manual $5.99 Read more