What if you need to draw a circle, and a compass at hand is not! To get out of this situation by making a simple compass of the bent and strapped to the pencil in the right place for a stylus pen, as shown in the figure.
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In January 1944, the headquarters of the U.S. army in Europe, stationed at the moment in the UK, was sent for consideration to Washington's urgent request to manufacture 250 heavy tanks...
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In school museums or at exhibitions of young artists in the role of a tour guide may carry a tape recorder. Explanatory text in advance is recorded on a magnetic tape. It remains only to...
