Jackson 637 Tube Tester Manual with Tube Test Data

Description

For sale are reprints of Jackson 637 Tube Tester User Manual and Tube Test Data.
User Manual is 4 pages long, Includes part list and Circuit Diagram. 8 page Tube Test Data form 634/637-12 includes many tubes not on tester's roll chart. Also included are 2 pages of supplements.
Real Paper Manual. Quality Printed and Comb Bound. Printed from available copy or scanned from original at 800dpi, restored in Photoshop, Laser printed on premium acid free paper, they will serve for years. Most manuals Include foldout of Circuit Diagram. Cover page printed on Cover Stock.