Capacitor Test Rig
Heathkit Schematic and Manual Archive | Vintage Radio Info
Fet Vom
VTVM
Building The Ultimate Raspberry Pi Automation Controller | Hackaday

https://www.ebay.com/itm/Heathkit-V-7A-Analog-Vacuum-Tube-Voltmeter/143682533077?hash=item21742576d5:g:FcUAAOSwrJpfNcY0:sc:ShippingMethodStandard!98226!US!-1

https://www.ebay.com/itm/Vintage-HEATHKIT-Model-IM-28-VTVM-Vacuum-Tube-Voltmeter/402345425176?epid=1307744012&hash=item5dada7f918:g:FrcAAOSwpmZfJFI5
https://www.youtube.com/watch?v=I0Ts_NnXePM



IM28U
