
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
BORING MILLING OF
The functions of the boring machine can run, and milling. Of course, at a lower level of precision, but for many works this is not essential. For such conversion we recommend you to use...
SHEATH-AXE
Maybe for a log splitter and still one notch more or less on its working edge; do not depend on it, it will split the log or not. Another thing — the axe of a carpenter or woodcutter:...