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 Man Builds Tiny W-18 Engine This 3D Printer Is an Artist That Paints With Light 120 Year Old Fully Functioning Calculator Machine prints metal midair 1000 hours of clockbuilding in 12 minutes The Only Handheld Printer You’ll Ever Need