If you have a lot of time to measure the volume of the same liquid or granular materials, make the appropriate mark on the measuring circle, glued at the right level strips of adhesive medical tape. At the same time can be done on them and the labels which are specified died.
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From the lids for mayonnaise-tion jars and milk bottles can be cut uplotnitelya strip — polyethylene sufficiently elastic material. And cut the rim of the lid — ready clamp for rubber...
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Anyone who at least once in a lifetime chance to deal with wires, you can make original TV antenna (Fig.1) no worse than industrial zigzag. The idea of this simple device I made in...
