The SEW EASY 60° triangle ruler is a measuring guide for quilters and patchworkers who need repeatable 60° angles for geometric layouts and strip-based shapes. Ruler size is 305 x 352 mm (12 x 13 7/8 in), giving ample length for aligning fabric, marking edges, and keeping triangle cuts consistent from piece to piece. Use it to measure and draft triangle components for patterns that join at 60° angles, helping pieces match accurately during piecing.