The mark consists of a circle surrounded by a partial ring with thickness approximately one fourth the diameter of the circle and starting at approximately 130 degrees on a circle whose zero is at the three o'clock position and ending at 200 degrees or a little before the nine o'clock position and whose interior edge is approximately half the diameter of the circle away from the edge of the circle with three long identical trapezoids pointing at the center of the circle and equally spaced in the gap of the ring and whose ends closest to the circle are positioned approximately one third the diameter of the circle away from the edge of the circle and with a width approximately one fourth the diameter of the circle and with a length approximately twice the diameter of the circle and whose far end is approximately one half the diameter of the circle and with the word "FRICTION" in all capitals starting approximately one fourth the diameter of the circle away from the outer edge of the ring from the 0 degree or three o'clock position and the word "WORKS" in all capitals and on the line below the word "FRICTION" with both words right hand justified and vertically centered as a single unit on the horizonal axis extending out from the center of the circle.