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
SCREWDRIVER WITH CLIP
During Assembly or disassembly of the structure when access to the screws or threaded holes complicate other parts, very useful screwdriver with gripper, acting on the principle of a...
NOT A TRUCK, AND LUCKY
Even a teenager will be able to cope with a large metal flask of water or heavy gas cylinders, driving them to the house without the help of a truck, but only because that's such a...
