Test for actual real-life mutual conductance (life) of the tube (including any shorts, gas and leakage). So this shows what I get, and what you get may be slightly different. When done it will automatic combined.
Item Tag: 14H7
Sylvania NOS 14H7 Vacuum Tube Tested
NOS. Tested on my Hickok 6000A and guaranteed for 30 days upon arrival.