Install a Battery Eliminator in a vintage VTVM

If you are tired of cleaning up corrosion and replacing your 1.5 Volt battery in your Vintage VTVM, this is a simple fix that will not only save you the hassle, it will prolong the life of your instrument and require less calibration! I will show you how to install a inexpensive mini 1.5V power supply in your VTVM. I will also walk through fabricating test leads and calibrating an RCA WV-77E VoltOhmyst Vacuum Tube Voltmeter (VTVM)