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 720 90-Watt CW Transmitter Manual $7.99 Read more EICO Model 460 Oscilloscope Instruction and Assembly Manual $9.49 Read more EICO Model 315 Signal Generator Instruction Manual $7.99 Read more