Get this ruler here: http://www.kayewood.com/item/Square_Me_Up_Ruler_by_Elisa_Wilson_of_Back_Porch...
Eilsa's Square Me Up Ruler uses popular 10" and 5" squares of fabric to give you quick and accurate half-square triangles in 4 1/2 (4" finished size) and 2" (1 1/2" finished size).
Nice to be able to use precuts!
debquilt 1 month ago