Magnetic stand made from old magnet, will take care about the safety of various small items — from paper clips and pins to “precisely” small tools and fasteners. It will also help to find them on the floor, covered with a fleecy rug.
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(Model-a copy of the R-17). In October 1950, S. P. Korolev, the former at that time Chief designer of the Department of NII-88, involved in the ballistic long-range missiles, appealed to...
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Nowadays there are cases of power failure. In such a situation, can save the emergency power supply. For example, from a car battery with a homemade voltage Converter 12/220 V. Saw:...
