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
ROCKETMODEL CLASS S8F
Readers of radio-controlled model copy of the missile and aircraft interceptor BI-1, the parameters of which correspond to rocket gliders S8F Recall that this flying class combines the...
Kursk kart
The kart design (Fig. 1) has no complex units requiring high qualifications of performers and can be replicated in technical clubs of schools or at young technicians' stations that have a...
