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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Adjustable table
It's good if a child has their own table for games and activities. But it would be even better if the table always matched the child's age, or more precisely — their height.
The table...
P-06 EXPERIMENTAL
In 1935, in the Reactive section of the CA osoaviahima of the USSR designer A. I. Polar was designed and built experimental rocket. Originally it was called "Osoaviakhim" (R-1)....
