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
A UNIQUE RESULT
Two world records set at international competitions in ship modeling Soviet athlete, master of sports of international class G. shahazizyan. It happened at the starts in the Bulgarian...
MONALISA WITH MOTOR
Last spring I made myself water skiing. But to slip on them could rarely, as the role of the tug performed... a motorcycle with a sidecar. The construction of special boats would require...
