Jackson 658-1 Tube Tester Manual with Tube Test Data




For sale are reprints of Jackson 658-1 Tube Tester User Manual and Tube Test Data.

User Manual is 16 pages long, Does not include part list or Circuit Diagram (manual pints to diagram in bottom of the case). 19 page Tube Test Data consists of Obsolete tube chart and Subminiature tube chart and includes many tubes not on tester’s roll chart. Chart is version SP 658/6