Juki quarter-inch ruler foot 40201927 is for free-motion quilting alongside a quilting ruler. The outside edge sits 1/4 inch from the needle; the foot height can be adjusted for the fabric thickness.
Compatible models
DX-2000QVP, HZL-DX7, HZL-DX5, HZL-F600, HZL-F400, HZL-F300, HZL-G320, HZL-G220, HZL-G120, HZL-G210 and HZL-G110.
Use a suitable quilting ruler and follow the machine and foot setup instructions. This part is different from the ruler foot used by the NX7 and UX series.