This unusual pen is unique for the following reasons:
1. The metal plate, folded in half, forming a reservoir that allows you to write much longer without re-dipping.
2. Depending on the angle of the pen to the paper, the stroke may be thin or thick (similar to using a brush).
3. Big pressure on the pen causes a greater amount of ink.
4. Pacing is very important, fast and sharp movements lead to uneven and sharp edges, adding a special flavor.