OMNIGRIP ruler is a precision measuring tool for quilting, sewing, and fabric crafts where accurate cutting matters. This ruler size is 2-1/2" x 18" (6. 3 x 45 for consistent results across your project and store flat between uses to keep lines clear to keep lines clear to keep lines clear to keep lines clear to keep lines clear to keep lines clear to keep lines clear to keep lines clear to keep lines clear.