Useless Perpetual Devices A useless device is like a time loop and it just wants your attention. It is there just so that you get hypnotized. Facebook Prev Article Next Article Machinery Checkout these cool gadgets... Related Posts These are the Mecanum wheels. They don’t require steering to turn the vehicle. 100 Year Old Self-Playing Violin – “The Eighth Wonder Of the World” 3D Cold Spray Repairs Any Metal Component to Its Former Glory The Most Clever Lock You Will See Linear friction welding of wood Watch a Humongous Hungry Machine Crush and Swallow Engine Blocks