Bloc Loc - Half-Square Triangle Ruler 4.5" x 4.5'

Bloc Loc's Half Square Triangle 4.5" x 4.5" ruler locks onto the seam for instant ruler placement, control so that the seam ends 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, LeMoyne Star, double windmill, hidden square units and much much more! *Needed for Nancy Mahoney Retreat September 6th 2022*