
If a wooden bar and drill two holes the diameter of pencils or flomasterom — get a new handy tool for drawing or sketching: one motion will be two parallel lines. Instead of a single bar it is possible to use two longitudinal halves, in which to choose the grooves for writing the stems and then tie or glue the workpiece.
Recommend to read
THE TRIUMPH OF THE NAME OF THE LOSER
We left a tireless worker submarine building John Holland at the end of the XX century, at the time of his career, when the impression that finally his long labors were crowned with...
THE CAR IS UNDER PROTECTION OF ELECTRONICS
E-the guard mounted on the car "Lada", emits intermittent alarm signals if someone opens the door, hood or trunk of a car. How does such a device? The position switch B1 on the...