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
GRANDMA’S MOUSETRAP
In fact, this device rodents literally no catches, but oceti effectively brings forth the Secret is not in a design that is extremely simple and in folk wisdom, take one feature in the...
Aerosled “Swan-7”
Among the large family of "Lebed" (Swan) designs by Vitaly Konstantinovich Savitsky, the "Lebed-7" stands out for its bold layout of components and assemblies, successful centering, good...
