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
EARTHLY PROFESSION THAT
The development of the untold wealth of the North, Siberia and Far East is impossible without specialized vehicles. Many more years will have to transfer the cargos to remote parts of...
RAIL FOR STRENGTH
Widely used in home construction and furniture manufacturing, chipboard (particle Board) for all their positive qualities, have a serious drawback — they are poorly kept fasteners. If...
