What desktop contraption could possibly be more evocative of the Cold War than a handcrafted clock made with some genuine Nixie tubes? How about a clock made with Nixie tubes and forged in concrete? While it's unfortunately just a one-off creation for now, this so-called Nixie Concrete Clock designed by Daniel Kurth is indeed fully functional (and even wall-mountable, depending on the wall), and could possibly be headed into production if Kurth can line up a few partners (and buyers). In the meantime, you can get a closer look at the clock by hitting up the read ilnk below, and contemplate the daunting task of building your own after taking a pe