Gas stove is a source of danger in the apartment and demands to the Saba special attention. Offered under the handles of the valves of the burners to put red stripes visible only in the “open” position. Now only one bigpage glance at the stove to see if the gas is blocked.
Recommend to read
BLASTER AQUANAUT
About ten years ago I read in "M-To" article that described the design of the spear gun. Decided using the same principle — a spring as a battery, to make the gun more simple, easy, and...
ELLIPSOGRAPH
ELLIPSOGRAPH — is the name of this simple device. It can be used to draw an ellipse with any ratio of the semiaxes. It is enough to set into the holes on the line of alignment pins to...
