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.
Recommend to read
ON THE RACETRACK – THE “TADPOLE”
Although the car with the air screw (the cars) and are considered only a transitional step on the way of a young athlete from the "children" contour and rezinomotornaya of micromachines...
ECONOMICAL PENCIL
When the hand is not a pencil of suitable color or hardness. would be useful and "bits", but they are inconvenient to use, they can be extended by sticking in a metal or plastic tube of...
