Ordinary clothespins modelers often use as clips when working with small parts. Of the two wood you can collect even more powerful for such a clamp: it is used, as shown in the figure, additionally the tail of the second pins and its spring.
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ACCORDING TO THE PRINCIPLE OF COMMUNICATING VESSELS
...it is possible to make a device for determining the marks in the construction of garden buildings. For this you will need a long hose with transparent bits filled with water.
FOR BIPOLAR TRANSISTORS
This device whose description was published in the journal "Funkamateur" (GDR), used in various measuring devices or equipment, where necessary intermittent light or sound alarm....
