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
COMFORT UNDER THE FILM
I am an old gardener, many years of perfecting his greenhouse. First staged in her warm bed: dug two-foot holes in the ground, put in it a layer of twigs, stems, and covered with...
AMERICAN TANK DESTROYERS
The fighting of the "blitzkrieg" — start-up phase of the Second world war in Europe, first and foremost, stunning successes Germanic tank troops, clearly showed Americans that they have,...