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
VITA — SWALLOW VELOMOBILES
Oddly enough, recumbent... older bike. Its ancestor can be considered the original "self-moving carriage" proposed by the famous Russian inventor Kulibin in 1791. On her back, at the...
“SWALLOW’S TAIL” AND OTHERS
Connection of wooden panels with various kinds of spikes with the twofold goal. First of all, getting hard articulation of the various parts of the structure, such as parts, shelves,...
