If, during the filling of high capacity water (e.g. drums) intended for watering the garden, throwing a rubber ball of small size, its appearance over the edge of prompts to close the valve. Thereby eliminating the need for constant monitoring of the level of a cursory glance.
N. SVIRIDENKO, p. Pervomayskiy, Kazakhstan
Recommend to read
IF WIT…
A quick key. Participants NTTM Novokuibyshevsk a freight motor transport enterprise Governance transport control embedded high-speed universal wrench for screwing of pins. Thanks to the...
A STRATEGIC MISTAKE OF THE EMPIRE
It is not easy to assess the situation in the world that has developed after the First world war. The defeated German Empire is the largest country in Western Europe fizzled out in the...
