To 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.
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THE KEY TO THE LOCK — UP RESISTOR
In the fourth issue of the journal for the year 1978, published schemes of electric locks with a "secret". They all work well, but they, in my opinion, there is one drawback: the locks...
THE SIMULATOR IN THE YARD
Now many boys are addicted to "rolling": by all available means trying to build muscles, the "pump". I think they might be interested in offer just a simulator, which can easily be...
