“PRESS” FOR TUBE

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

  • POWER SUPPLY WITH ACTIVE FILTERSPOWER SUPPLY WITH ACTIVE FILTERS
    For portable electronic equipment need a small volume and weight of the power supply. To solve this problem relatively simply by replacing passive LC and active RC filters.   The...
  • THOUGH STABBING THOUGH OPENTHOUGH STABBING THOUGH OPEN
    This simple device, although simple, are quite versatile. Consisting of two wooden bars with notches fastened to one end of a sturdy leather or fabric strap, it will help to prick the...