The 1/4 inch ruler foot was specifically designed to use with quilting rulers. The key point of the foot is the 1/4 inch cup height which moves smoothly alongside the quilting ruler without allowing the ruler to slide over or under the foot. The needle drops a 1/4 inch away from the ruler to create the quilting line.

JANOME (Manufacturer) -> Feet (Accessory type) -> For sewing machines; For embroidery machines; For AcuFeed sewing machines (Function) -> Horizontal, 5-7 mm; Horizontal, 9 mm (Hook type)