
How often in the lectures or lessons on a stand, posters and other visual AIDS? Of course, stationery buttons! In recent years, however, they comes to the aid of sticky tape. However, neither one nor the other can not be called gentle fixtures — they spoil what keep. Universal and yet does not harm the posters device can be made of conventional rails. Connect the three strips of different width so that between them formed a groove — it will hold, for example, maps: it is enough to jam the cut sheet of rubber or conventional eraser wedges; and the — beveled fourth rail.
Recommend to read
Mini-Moped Made from a Bicycle
The age of the members of the "Planeta" young technicians station varies greatly: from elementary school students to graduates. And if high school students are more interested in serious...
SHOES FOR THE “LUNOKHOD”
Wheeled ATVs (all terrain vehicle jokingly called the homebrew "karakachani" or "Rovers") on low-pressure tires (often referred to as the "Pneumatics") is a very popular car among...