This simple device facilitates the use of any tube, helping to squeeze it evenly and gently. It consists of a base in a hole which is inserted the tube, and turning a key with slit for exciting a planar end of the tube. The base and key are made of wooden bars of appropriate dimensions. Their interaction is clear from the figure.
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I think many who have to work with small metal objects. will be useful to my "magnetic" finger, or rather — rubber fingerstall to which is glued a small square of a permanent magnet.
THE COLUMN ON THE SUSPENSION
Radio and television sets often have a certain height, what is it used for rather bulky factory wall brackets shelves. However, the easiest, but less secure and convenient suspension is...
