I am looking for an operators manual for this tube tester.
Does anyone have one I can get a copy of or know where
I can purchase one? I have not used this tester before
and would like to ensure I am operating it properly.
Thanks in advance.

I have a manual for for a NRI model 70, I don't know how close it is to a model 71.

: I am looking for an operators manual for this tube tester.
: Does anyone have one I can get a copy of or know where
: I can purchase one? I have not used this tester before
: and would like to ensure I am operating it properly.
: Thanks in advance.