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
PROGRAMMABLE CODE
In technical literature there are many publications on improvised electronic code locks — variety of complexity and management that is performed on chips as small and medium scale...
TROUBLE-FREE VALVE
The valve switches the water installed in the bathrooms and on the kitchen sink, often fail and the cause is the deformation of the rubber cuff, which slides with Kalpana when trying to...
