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
IN THE CAR”DIPLOMAT” ON THE STROLLER
How not to fold walking stroller still it is quite cumbersome. And she weighs a lot, so to enter the car or bus with a child and a heavy stroller is no easy task. Besides, and stored in...
ADDING MACHINE FOR “KIDS”
Now, not only in family but also in kindergartens of children of five, six, and even earlier beginning to see the first difficulties addition and subtraction within the initial two or...
