What is being described here?

A circle 3" in diameter contains three items:

Approximately 3/4" from the bottom is a single line approximately 2" long. The ends of this line are curved slightly upward in a small arc. Approximately 1/2"

from the top of the circle and 1" apart are two small circles 1/4" in diameter.

A perfect square encloses the circle, with the four sides of the square barely touching four points of the circle.