1/4" Isometric Paper Isometric graph paper is used to create isometric images or for graphing three-dimensional functions. It has a wide range of uses from mapping games to designing objects for 3D printing to engineering and mathematical uses. It can also simply be used for relaxing pattern drawing, doodling and coloring. Isometric graph paper has three sets of parallel lines representing length, width and height forming a grid of equilateral triangles.