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
MOTOR FOR CARLSON
Looking at this unusual aredigital, could not help thinking that he was inspired by the famous Swedish writer Astrid Lindgren for creating well-known children's story "Karlson on the...
JL-8/K-8 Karakorum (China/Pakistan)
Combat training aircraft K-8 Karakorum was created in 1986 jointly by the Chinese company HAIG and Pakistani RACES. The first prototypes were assembled in 1989, the First flight took...