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.
Recommend to read
CAPACITORS REJECTS BASIC
I remember a few years ago in the journal "modelist-Konstruktor" there is the material possibility of measuring electrical capacitance using a PC "Specialist". Then published the program...
AN IMPROVED VERSION
Isn't it tempting to make a motor-plow design which has almost no welds! That's why published in the "M-K" № 3, 1985 article "the wheel of veloplugs" on how to build such a mechanism...
