Bloc LocHalf Square Triangle Ruler Set 5.1cm - 6.4cm 11cm,17cm, Acrylic Ruler

Bloc Loc - Half Square Acrylic Triangle Ruler Set #2, 2.5"4.5",6.5"

New Leaf Stitches Slotted Trimmer - Acrylic Template Ruler for Accurate Cutting and Trimming - Designed for Half-Square Triangles, Strip Piecing, Block Construction - Ideal Stencil & Tool for Quilters

Omnigrid Rotating Mat Cutters & Accessories, 14", Green