Wedges make circles, but Squedges make squares. The 11.5 degree Squedge makes a 16" finished square (16-1/2" with seam allowances) with 32 Squedge pieces. Use the precise slots for marking the inner shorter pieces. A bonus pattern is included with the ruler.
While these designs may look complex, they're easily sewn in an afternoon! Packaged together, the Gem Ten and the Gem Five triangles are the secret to these unique patterns.
"Gem 30" by Phillips Fiber Arts is a companion ruler to the Jewel Box Gems 5 and 10 ruler. Three Gem 30's make a Gem Ten or six Gem 30's make a Gem Five.