Bloc Loc Half-Square Triangle Ruler 9 1/2" x 9 1/2"

Bloc Loc’s Half-Square Ruler 9 1/2″ x 9 1/2″ locks onto the seam for instant ruler placement, control so that the seams end in each corner and trims 90% faster than a flat ruler.

Trims all types of half-square triangle units quickly, easily and with precision while controlling where the seams go.