Tektronix 7904 oscilloscope mainframe for free pick up.

Tektronix 7904 oscilloscope  Tektronix 7904 scope.

Tektronix 7904 oscilloscope  Tektronix 7904 scope.

* The Main frame has a fault. It turns on but does not sweep ! The 7885 Horizontal trigger plug-in is ok.

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