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 1050 6V 12V Battery Eliminator and Charger Construction Manual $5.99 Read more EICO Model 324 Signal Generator Construction Manual $7.99 Read more EICO Model 320 322 Signal Generator Construction Manual $7.99 Read more EICO Model 718 DX-718 Space Ranger Solid State Communication Receiver Manual $8.99 Read more