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
ZAZ-965 “Zaporozhets”
The domestic auto industry came to the choice of the prototype for the production of small-car very responsibly — was based on FIAT600 miniature, won in Europe, indeed wildly popular....
FROM PROTOTYPE TO COPY
First of all, let me ask you a question: can a student-constructor of ship models do with their hands, without the help of a group leader, to create a good copy of a military ship? Most...
