Plastic body ball point pen is often broken, especially at the tip, near the writing unit. Operational offer a way out: to tighten tight the rod in a paper tube, taped the edge of the strand. This “ball” will serve to securely purchase the new. N. ALIKIN, St. P etersburg
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RIDING ON THE WINCH
In this release, "M-K" we want to acquaint readers with one of the most effective tilling mechanisms, which has recently been gaining more and more popularity among Amateur designers....
FOR BIPOLAR TRANSISTORS
This device whose description was published in the journal "Funkamateur" (GDR), used in various measuring devices or equipment, where necessary intermittent light or sound alarm....
