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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A very simple device in order to train the hand for, say, playing table tennis, can be done in just one evening. Here are the materials you will need for this. Two boards: one size...
