Draftex offer and extensive range of Graph Paper as well as Isometric Grid Paper. Sizes available: A4 A3 A2 and 760 x 510. 1mm, 2mm, 5mm grids. Graph paper, coordinate paper, grid paper, engineers paper or squared paper is paper that is printed with lines which make up a regular grid. They are used to plot points on a graph showing a diagram that further illustrates an idea, an accurate drawing etc. Used by architects, engineers, students, and other professionals.