I'm not sure if I put this in the right place. In need of some help on how to use this bk 520b transistor tester. I bought this and not sure if it is 100% working. If somebody that has one and knows how to use it. Can you help me out, so I can see if this is working properly.

Thanks in advance

 

Here's the manual, read it and come back with more specific questions if you have any..https://bkpmedia.s3.amazonaws.com/downloads/manuals/en-us/520B_manual.pdf

 

I bought that unit in 1974.

 

I got mine in 1983....Still have it..