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 The universe’s biggest gear reduction! The SoundTank Will Blow Your Ears Off This 3D Printer Is an Artist That Paints With Light Man Builds Tiny W-18 Engine This electric cart gives humans the superhuman strength to pull an entire tractor trailer A look inside the oldest electronic calculator from 1962!