Completely untested may work fine I don’t know. Came from an estate of a guy who regularly used them too make radio tubes so I think it works but can’t be sure
Vintage Hickok 6000A Dynamic Mutual Conductance Tube Tester Parts Only Untested
$239.99
Brand
Hickok
Unit Type
Unit
Model
6000A
MPN
6000A
Country/Region of Manufacture
United States
Unit Quantity
1
UPC
NA
condition
For parts or not working