Non-Slip Neon Square Ruler - 20.5 inch x 20.5 inch.
Non-Slip Ruler for cutting, squaring & setting large blocks & triangles. Measurements are printed on the ruler for the squares needed to cut all side and corner triangles-no more math!
Simplify large size cutting tasks, cuts blocks, strips and borders up 20 1/2in. Locate and mark center of blocks, square blocks up easily cut large squares into 1/4 square triangles.