This new and improved Triangle Square Up Ruler makes perfect half triangle squares or quarter triangle squares in half the time. Features tip grooves to trim tips at 1" & 1/2" increments. Squares patches up to 4-1/2" *Product cannot to be sold on any 3rd Party site such as Amazon, Etsy, Ebay or any other 3rd Party sites.*. This new and improved Triangle Square Up Ruler makes perfect half triangle squares or quarter triangle squares in half the time. Features tip grooves to trim tips at 1" & 1/2" increments. Squares patches up to 4-1/2". The ruler is marked in two colors for easy reading and coordinates with the most popular ruler brand. Convenient 1/8", 1/4", 1/2" and 1" lines for precise measuring. Laser cut and printed on Polycarbonate Clear Plastic. Fully illustrated and detailed instructions are included. Made in the USA.