This Gear Set is designed as an expansion to the Full Page Gear Set.
This gear set uses hoops in the oblong pieces to provide precision re-positioning of designs. By stepping the hoops in different directions and wild compound designs can be made that are impossible any other way.
This video shows it in action and is beautiful:
180/136, 80/54, 96/63, 96/72, 180/120, 120/80, 80/40
72, 63, 54, 40