358: Difference between revisions

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|class=frequency standards and meters
|class=frequency standards and meters
|summary=amateur band wavemeter
|summary=amateur band wavemeter
|image=
|image=GR 358 Case Open B.jpg
|caption=General Radio 358 Amateur Band Wavemeter
|caption=General Radio 358 Amateur Band Wavemeter
|series=GR 358 Case Open B.jpg
|series=
|introduced=1924
|introduced=1924
|discontinued=1939
|discontinued=1939
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