Fons and Porter Pyramid Ruler<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>This pyramid ruler is designed to cut equilateral triangles that finish from 1-inch to 6-inch in a snap</li><li>Features: coordinates with both the Fons and Porter Triangle Ruler and 60-degree Diamond Ruler (not included)</li><li>his ruler does all the math for you; easy-to-understand directions printed on the ruler and easy-to-understand instructions with photos and ideas for pyramid triangles are enclosed</li><li>Ruler measures: 6-5/8 by 7-3/4 by 1/8-inch</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51i38LGEayL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51R-6xQzHJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31iDjiIBe1L.jpg" noproxy>