OLFA 12 1/2 x 12 1/2 Frosted Acrylic Ruler (QR-9S) - Non Slip Square 12.5x12.5 Inch Acrylic Ruler with Grid for Cutting Fabric, Sewing, Quilting, & Crafts

I love this ruler. The black thin lines are easier to see when using colorful material.

I like the Olfa rulers. They are easy to read with the marks you need but not too busy.

Good buy

great, sturdy quilting tool

Fantastic product