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
PLOW WINCH
Ground treatment — the work is physically difficult. To facilitate the farmers-gardeners and used mini tractors and tillers. I thought that it is best for such work fits motoliberty, and...
OUR ANSWER “STRATOJET”
Long-range bomber Tu-16. Large-scale development of high-speed jet bombers, long-range flight, which began in the USA after the Second world war, could not remain unnoticed in the Soviet...
