Balanced
5V4GA
Sylvania
Vacuum Tube
Black Plates
Top Double Bar Rectangle Getter
Tested 970/970
on a Paul Hart calibrated & modified Westmore 501 (Triplett 3444) tube tester.
Triplett tests rectifiers under load (the best test) & indicates whether they test correctly or not - no GM on rectifiers. Test results given are from the 1000 scale for comparison. Good aligns with 600.
Test results will differ between various testers for many reasons such as technical design, aging components, etc. So while test results are a good indication of quality there can be some difference between the many differently designed & maintained testers.
*If your purchase is not fully satisfactory please contact me .