EICO 628 Emission Tube Tester Manual Sorry, this product cannot be purchased. $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 Model 955 In-Circuit Capacitor Tester Instruction Manual $8.99 Read more EICO Model 324 Signal Generator Construction Manual $7.99 Read more EICO Model 315 Signal Generator Instruction Manual $7.99 Read more EICO 720 90-Watt CW Transmitter Manual $7.99 Read more