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
“GRAD” AMERICAN STYLE
In the 1970 - 1980s, Soviet designers created the powerful jet system of volley fire MLRS, the superiority of which was recognized by military professionals worldwide. Under their...
ONCE AGAIN, THE “PACE”
Any of us can certainly, without hesitation, to list a lot of famous planes, cars and ships, inscribed your page in history of development of military and civilian equipment. However, it...
