This OMNIGRID acrylic ruler supports precise measuring and trimming for quilting, sewing, and craft projects. Sized 6½" × 6½" (16.5 × 16.5 cm), it combines edge markings with the OMNIGRID double-sight line system so reference lines stay visible on light or dark fabrics. A mini-grid section helps with triangle alignment checks, making it useful when building half-square or quarter-square triangle units.