FOOT IN AID

LEG AIDTo remove or hang on the door hinges alone — for many, this becomes an intractable problem. Make the device shown in the figure, and the case will move forward.

Recommend to read

  • MODULAR POWER SUPPLYMODULAR POWER SUPPLY
    In Amateur practice when developing or building a device often require multiple power sources at different voltages. For example, structures made in operational amplifiers and working in...
  • STARTED WITH BALLOONSTARTED WITH BALLOON
    It was built of plain newsprint. This simple design N. V. Rumyantsev, the head of one of clubs of young technicians of Ryazan, was able to captivate the children, introduce them to...