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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Do not rush to throw out an electrosoldering iron: its handle more work if we impose it on file, chisel. N. LUSHNIKOV, V. between kuzhenkino, Kalinin region.
