
From time immemorial came to us GRID (as defined by the famous Russian language dictionary by V. dal — “all non-continuous thing with skvoznoy, allowing spans”) and a SIEVE (“drum with mesh bottom for proshivki what the large sieve: a sort of box with a perforated bottom” — ibid.). Entering as an integral part of many machines and mechanisms, they do not seem to lose its relevance in its original form. Moreover, complement each other, gaining new qualities, as it is convincingly shown a thematic compilation of submissions received from Ukraine.


Cut the pipe threads have not only a plumber. Many people today are forced to learn the profession of home wizard.















