Tektronix Type 555 Dual Beam Oscilloscope with over 100 vacuum tubes. See if it works after all these years.
Негізгі бет Tektronix type 555 oscilloscope, over 100 tubes inside!
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Tektronix Type 555 Dual Beam Oscilloscope with over 100 vacuum tubes. See if it works after all these years.
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