Strip Tube Acrylic Quilt Ruler
This ruler from Cozy Quilt Designs makes half square triangles a breeze by combining brilliant engineering with, "the tube technique." It's perfect to use with strips and even includes directions to make our favorite block from 2-1/2in strips. With this great gadget, you can easily make accurate half square triangles from 1in to 9-1/2in! Please note that the raw edges of you HSTs will be biased.