Half-Square Triangle Ruler 2 1/2" x 2 1/2" Bloc Loc

Bloc Loc's Half-Square Triangle ruler 2 1/2" x 2 1/2" locks onto the seams for instant ruler placement, control so that the seams end in each corner and trim faster than a flat ruler. Ruler rock is gone, too! Also trims quarter-square triangles, birds in the air, y-blocks, LeMoyne Star, double windmill, hidden square units and much, much more.