In construction you often have to deal with the internal measurements. For example, to determine the distance between the form panels, the value of the window or doorway. A good assistant in such cases would be sliding ruler, made of tube and metal rod with applied risk. V. ANTIPIN
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It would seem that all good pocket flashlight "Elektronika B6-03": from design to filling, including a fairly capacious battery of three disk accumulators D-0,26. But... As shown by...
