Handi Gadgets - HQ Multi Clamshells Ruler

The quarter-inch thickness gives it a satisfying heft that doesn't slide around on my fabric, and having four different half-circle sizes in one ruler saves me from constantly grabbing separate templates.

The thick ¼" acrylic feels really sturdy in my hand, and I love how smoothly I can trace the smallest clamshell for quilt motifs. It’s already saved me time switching between templates for my curved piecing.

The four half-circle sizes on this ruler give me so many options for quilting curves, and the ¼-inch thick acrylic feels really sturdy. I've been using it for a few days and the edges are clean enough to cut against without slipping.