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title=Tektronix 511| | title=Tektronix 511| | ||
summary=10 MHz Tube scope<br />''First Tektronix product''| | summary=10 MHz Tube scope<br />''First Tektronix product''| | ||
image=Tek | image=Tek 511 1.jpg| | ||
caption=Tektronix 511 front | | caption=Tektronix 511 front | | ||
introduced=1947 | | introduced=1947 | |