I own one of these little testers.. Work quite well. They have a power valve tester also. It does singles.
I have a Multi Miser that I love for power valves. It will do 4 at a time.
I have a Hickok 539, what a complicated piece.. Maintenance is always an issue and accuracy, is at best within 10-15%.
You have to really pay attention to analog stick meters.. They are not known for accuracy UNLES YOU keep them that way.. ACCURATE
Good investment...
I have a Multi Miser that I love for power valves. It will do 4 at a time.
I have a Hickok 539, what a complicated piece.. Maintenance is always an issue and accuracy, is at best within 10-15%.
You have to really pay attention to analog stick meters.. They are not known for accuracy UNLES YOU keep them that way.. ACCURATE
Good investment...