The mark consists of a mesh conical tip of a substantially larger conical filter, the tip being located at the bottom of the conical filter, which conical filter has a substantially larger mesh filter portion and a solid wall portion. The broken lines are intended to show the position of the mark with respect to a plural portion larger conical filter, which position and relationship thereto locate the mark, while the broken line portions are not themselves a part of the mark.
The intersecting solid lines represent strainer mesh and are not meant to indicate color.