- Tester Type: Emission-type (checks total electron emission against known standards using standard AC voltage applied to tube elements).
- Functions: Quality test (Good/Reject scale) and element short/leakage test (indicated via an internal neon indicator lamp).
- Sockets: 7 vacuum tube sockets accommodating various vintage formats, including standard bases as well as Compactron, Nuvistor, and Magnoval types depending on the revision/sockets wired.
- Power Requirements: Standard 117V AC household line voltage.
- Controls: Filament voltage selector switch, filament pin selector, shunt control potentiometer for calibration/sensitivity adjustment, and normal/special switches.