Achieve beautifully trimmed half square triangle units with the Half Square Triangle Ruler 4.5" Square by Bloc Loc! The innovative groove locks onto the seam for accurate ruler placement and greater control while trimming, helping you create precise units with ease. This ruler trims in 1/8" increments and can be used on a variety of unit sizes, making it a versatile addition to your quilting tools. Perfect for half square triangles and more, it can trim over nine different shapes quickly, accurately, and consistently.

Half-Square Triangle Ruler - 4.5" Square