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title=Tektronix 515| | title=Tektronix 515| | ||
summary=15 MHz Tube scope | | summary=15 MHz Tube scope | | ||
image=515a | image=515a trace.jpg | | ||
caption=Tektronix 515 front | | caption=Tektronix 515 front | | ||
introduced=1955 | | introduced=1955 | |