You need to carefully pour a viscous liquid (e.g. oil paint) from banks in a narrow-necked container or to fill in the gaps with the heated tar or mastic? Here you will rescue this type of nozzle, made of half cap from the same banks, tightly inserted in holes on the tube spout.
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Have a bad fitting or old doors, Windows, vents blows very often in the cracks where the hinges. In other places it would be possible to adapt all sorts of seals, but here? However,...
SECRETARY OF THE STUDENT
Many original equipment for studying and doing something they demonstrated this year in Moscow at the International exhibition "Technical means in educational process". Special interest...
