
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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Fire and rescue boat
Vessels of this class can be found in all major ports of virtually every country in the world. These are rescue craft built to assist those in distress, fight fires, patch hull damage,...