Even a disposable syringe can still be of use, and more than once — of course, for other purposes. For example, the packing case of needle incised along the axis, it is suitable for use as plastic plugs inserted into the hole in the wall. Screwed it in the screw provides the der is not worse than in special dowels sold in hardware stores.
N. ALIKIN, St. Petersburg
Recommend to read
LIGHT SEMICONDUCTORS
In 1907, English engineer Round, who worked at the world famous Marconi laboratory, accidentally noticed that running the detector around a point of contact there is a glow. Also...
COMBAT “SWIFT”
It would seem, what new it is possible to invent models of air combat! Undoubtedly, these microstrobili today meet all the requirements of transient encounters over the track. No wonder...