
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
ELECTRONIC “MIRACLE”
You enter the room, and suddenly light flashes, "alive" is a radio or a tape recorder. To make such a "miracle" the strength of the capacitive relay (the diagram in the figure). ...
THE “STEPCHILD” OF THE FLEETS OF HITLER AND MUSSOLINI
European Nazi Empire, Germany and Italy, showed a coincidence of interests on many issues. Was no exception and the construction of a naval fleet. Both the "leader" — Hitler and...