The use of rulers aids a long arm quilter in many ways. Straight lines, stitching in the ditch, geometric patterns, as well as curved patterns benefit greatly from the use of a ruler. I have rulers for arc, 90 deg angles, circles etc. In some cases a free hand circle or arc will be appropriate but in others a “perfect” crescent, circle or angle line will look much better. These are achieved through the use of a special machine base & rulers. This type of quilting is custom & I LOVE doing it!
Here are some examples. Description is available when you mouse over the photo and below the photo when viewing the enlargement.