Today Modern Mechanix we look at a device that supposedly makes it safe to repair planes in flight. Looking at the photo above this scheme seems anything but safe. If you've ever been to a carnival and gotten the feeling that the the games were not just hard, but impossible to win, you were right. This 1930 article explains how they cheat. Also today we look at a 1936 Popular Mechanics round up of odd and wonderful musical instruments, a very cool looking table made entirely of little interlocking pieces, a doggie treadmill for owners that want their dogs to be fit, but are too lazy to walk them, and a couple of ultra-streamlined German cars.