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Bloc Loc Half Square Triangle Ruler 2.5"

Bloc Loc’s Half-Square Triangle 2.5 x 2.5"  Ruler- Ruler locks onto the seams for instant ruler placement control so that the seams end in each corner and trims 90% faster than a flat ruler. Ruler rock is gone, too! Also trims quarter-square triangles, birds in the air, y-blocks, windmill, hidden square units and much, much more!