To work poster pens are very convenient, and who was fine — what makes them miracles: you can always pick up the desired width of the line, replacing the pen on the right more. But each can hold only one “track”. But this small improvement allows us to obtain two parallel lines… in a single pass. For this, needle files propisyvaetsya portion of the working edge of the Pera: are formed like two pens in one.
Recommend to read
SILENT ROAR
In the construction of cottages, garages in the farm economy often have to sift through loose building materials, soil or garden soil. It uses a special device — the so-called roar. His...
FOREWARNED IS PROTECTED
Permissible variation of AC voltage in household electrical network In the 220 — ±5 %. A more significant increase in voltage may result in damage to consumers of electric energy. In the...
