Testing a Soviet 1000 Volt Insulation Tester from 1985 Although the term ‘Iron Curtain’ from the Cold War brings to mind something like the Berlin Wall and its forbidding No Man’s Land, there was still active trade between the https://hackaday.com/2026/03/17/testing-a-soviet-1000-vol… https://hackaday.com/2026/03/17/testing-a-soviet-1000-vol…