The Modular Oblong Gear Set is a modular gear set that lets you make parallel rack gears of any length and distance apart. This is a modular generalized form of the Nested Oblong Gear Set. The parallel rack system can be tuned to hold any sized gear or hoop.
The gear set includes rack gear modular pieces of a variety of lengths, right angle corner pieces, and pieces without gear teeth that are in mm and quarter mm step sizes to tune the height of the oblong to precisely hold the hoop in place.