Get Squared™ Ruler; 6-1/2″ Outer 3-1/2″ Inner $17.79 Add to cart Get Squared™ Ruler; 8-1/2″ Outer 4-1/2″ Inner $21.19 Add to cart Get Squared™ Ruler; 12-1/2″ Outer 6-1/2″ Inner $28.09 Add to cart