Quickly square up two sizes of quilt blocks with one ruler.
Use just a rotary cutter to trim blocks and fussy-cut fabrics to size.
Teardrops allow for complete corner cut of interior square.
No need to mark or trace.
Unique three-color markings for easy measuring: Black - 1 inch and 1/2 inch, Blue - 1/4 inch & Magenta - 1/8 inch.