HP Vacuum Tube Voltmeter (VTVM) HP 400D - Needs some attention Last One For Sale
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HP Vacuum Tube Voltmeter (VTVM) HP 400D - Needs some attention Last One:
$60.00
HP Antique Vacuum Tube Voltmeter HP 400D - LAST ONE!.Tested - Most voltage selections the switch needs to be jiggled for meter to settle
near zero - after settling meter functions on test.
Need some TLC.
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