I recently purchased one of the Anatek Corp. Blue ESR Capacitor testers. It comes either pre-assembled or in kit form. I purchased the kit version to save some funds, and just to have the enjoyment of building an electronic kit.
I haven't put anything this complex together since I last built a Heathkit. Years ago I built some of their amateur radio equipment, receivers, transceivers, grid dip meters, etc. It was a blast building those back in the day. I am really looking forward to building this ESR meter.