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Bloc-Loc Half Rectangle Triangle Ruler
Bloc Loc's Half Rectangle Triangle Ruler set includes 2 grooved rulers in a 2:1 Ratio. The 2:1 ratio is the industry standard for quilt patterns. Each ruler measures 2.5" x 4.5" and can be used for any size HRT unit smaller than the rulers. These rulers can be used for smaller projects, and work for blocks up to 12 inches.