There are many ways to keep a ladder from slipping. The easiest “put on” her old sneakers or shoes with a rubber sole.
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Today we present pages from our popular section “Small Mechanization” by the club leader K. I. Kruglikov. He describes two original devices for watering garden and vegetable...
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At competitions of the Moscow schoolchildren model pupil of the 55th school Igor Svistunov in adverse weather conditions (wind of 6-10 m / s) scored 501 points. Only breaking model at...
