Over the last week or so I've been looking for the methods used for testing wax capacitors at their working voltage. Of course the likelihood is that they all duff but it would be nice to visually see they are!
I've seen the videos posted by Old Goat on YouTube and got rather interested in his Pyramid capacitor analyser with leakage tester, now I've seen your one. I understand Hunts did one, Heathkit and possibly more US focused manufacturers Sprague and Solar. I imagine coming across one these now would not be something that'd happen everyday.
A construction project, then, would be fantastic if you could spare the time especially, for me anyway, if it's aimed at the ...aahh...not so technical end of the membership. Veroboard, an old tobacco tin and a cycle lamp bulb?