Block Loc Half-Square Triangle Ruler, 6 1/2" square
Creative Grids 6 1/2" Square Ruler
Bloc Loc Log Cabin Ruler 2" and 3"
BL Log Cabin 3/4" & 1-1/2"
Block Loc Triangle in a Square Ruler Set, 6"
Bloc Loc Kaleidescope 6" Ruler Set