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
“ABOVE ALL SPAIN THE CLOUDLESS SKY…”
Fighter biplane HEINKEL Not-51. The military rebellion against the government of the Spanish Republic began on 17 July 1936, when the radio sounded the prearranged signal: "Above all...
A CHAIR WITH A SECRET
Durable, reliable, sustainable, it gives the impression of a powerfully built all-in-one monolith. But it is worth a little bit more pressure towards each other the upper cross member of...
