Creative Grids Stripology SquaredThe Stripology Squared, a slotted ruler by Gudrun Erla, has cutting slits every 1 2 inch so each strip you cut is the exact same size EVERY time! Follow the easy to read markings: squares for 2 1 2 inch cuts and stars for 1 1 2 inch cuts no math required! Cut five 2 1 2 or eight 1 1 2 inch strips without ever moving the ruler. The Stripology Squared includes markings to square up half square triangles, quarter square triangles, and blocks in whole and