I have the upright Mercury model 204 tube tester that came from our hometown Dox Drugs. I remember using it when I was 12 years old. It came with a tattered schematic showing the multi-tap power transformer and a function switching network. Basically it just needed clean-up and replacing missing screws.
By tube user manual, do you mean the knob setting/socket number charts? Have you googled for it?
::i just now bought an old drug store tester.a mercury model SS-201,serial #2859 upright floor model.would love to be able to send pictures.this thing is in great shape.would you know where i can find prints and the user tube manual.
::how about it guys ,anyone know.
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