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.
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THE GERMAN-CONTROLLED TORPEDOES
The development of guided torpedoes to sabotage units of the German fleet was conducted in parallel with the creation of the midget submarines. The first model of this weapon was...
TO BE FRAME PERFECT
Any frame — big or small — design "strict": makes serious demands on the butto-ness of angles and their careful execution and connection. To simplify the manufacture and to get a quality...
