I need to find a supplemental set-up chart
for older "obsolete tubes" for my SECO model 88a
tube tester. Any form this information comes in would
be just fine (xerox, email, handwritten on a napkin).
Any help or leads would be greatly appreciated!
Thanks in advance.
Rick Johnson

What tubes are you looking for? I have the complete card index on mine. 22 cards plus pink supplement.
I just need the operating instructions.

: I need to find a supplemental set-up chart
: for older "obsolete tubes" for my SECO model 88a
: tube tester. Any form this information comes in would
: be just fine (xerox, email, handwritten on a napkin).
: Any help or leads would be greatly appreciated!
: Thanks in advance.
: Rick Johnson