Sylvania Model 139 Tube Tester Manual Sorry, this product cannot be purchased. $7.99 Category: Sylvania Description Description For sale is reprint of Sylvania Model 139 Tube Tester Manual. Manual is 6 Pages long. Manual includes Part list and Circuit Diagram. Manual consists of 4 sections: Reference Data, Description, Operation, Maintenance. Related products Printed 1951 Sylvania Servicing Radio Television with VTVM $8.99 Read more Sylvania 219 220 Tube Test Data Book $11.99 Read more Sylvania Audio Oscillator Type 145 Manual $8.99 Read more Sylvania Model 140 Tube Tester Manual $9.99 Read more