A simple device for carrying a wide sheet materials are easy to make yourself, having at hand two, tee, four corners and three or four water pipe section.
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STEARMAN PT-13/PT-17/PT-18
In 1933, the designers of the American company "Starman" designed the training aircraft, with a motor 215 l,p, called the "model 70". It was an all-metal biplane with fabric covering,...
THE “CONTROLLER” DC NETWORK
The device is assembled on the proposed scheme allows to control the power consumed from the DC voltage source. Indication power led is a color display and sound. When using in-vehicle...
