High Voltage Regulated Power Supply
Northeast Scientific Instruments
Model RE-2006
continuously variable from 500 - 2000 volts DC
I plugged this unit in and checked some voltages and it seems to run a little high but stable. I set it for 500 volts and it showed almost 800 volts as the first picture shows. Maybe the tubes need replacing.
Free plus shipping
will ship at about 35 pounds