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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In the "M-K" No. 4, 1982, an article was published in which there was a talk about a club for young technology house management № 8 of the city of Vitebsk, about the fun and useful...
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