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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CHEBURASHKA
Double little micro-car, "rainbow," built on the Central station of young technicians of Georgia. It is intended for educational purposes and is designed for children younger and middle...
FILTERED ANY WATER
Most water filters designed for connection to the tap water. And what about those who have "bucket-wire", who carry water from a well? In these times and so often you have to clean....
