Heathkit-0-tube-data-for-heath-it-17-it-21-it 3117 – Manual (PDF)
Heathkit 3117 manual aids technicians in troubleshooting and calibrating Heath IT-17 and IT-21 tube testers. PDF size: 2.1 MB.
Heathkit 3117 manual aids technicians in troubleshooting and calibrating Heath IT-17 and IT-21 tube testers. PDF size: 2.1 MB.