EICO 636 Tube Tester Manual with 1973 Tube Test Data




For sale are reprints of EICO Model 636 Tube Tester User Manual and Tube Test Data. Manual was released by Coletronics Service. 

User Manual is 6 pages long, Includes part list and Circuit Diagram. 49 page Tube Test Data is dated January 1973 includes many tubes not on tester’s roll chart. Tube test data was enlarged from 5×7″ booklet.