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Meter Voltmeter Type TF428BA Marconi Valve voltmeter with external probe for RF measurements. Ranges = 1.5 volts to 15 volts , or 5 volts to 15 volts on X10 scale. AC or DC |
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Meter Voltmeter Type TF428B (Marconi) (Photograph Number 0323) Click on the image to get the full size image. |