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
THE SOLDERING OF THE RESISTOR
I recommend readers of the magazine is easy to count, easy to manufacture and very reliable electric soldering iron. At my house, for example, these range from "krohotulki" for work with...
FROM THE PACKAGING — THE BOOK
It is known that to bend the pages of books — barbarism, but not always at hand is easy and beautiful bookmarks. Meanwhile, they are easy to manufacture, and in any amount and any form,...
