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
NORTH AMERICAN FJ-4B FURY
The development of carrier-based jet fighter with the designation F1J firm North American beginning in the years of the Second world war. It was the car with straight low wing and front...
NOT FLOUR, AND THE CURRENT
Live in the taiga wilderness, starved (fuel for the diesel generator running out) energy rations. And next carelessly rushing river. Natural, so to speak, a source of energy, what...
