We are expanding our line of Geometric Drawing Tools to include more Gridded Sketchbooks for 3D Isometric / Perspective Drawing.

5-point Perspective SPHERE GRID Transparency Sheet 2-point Perspective Grid Transparency Sheet Isometric Grid Transparency Sheet
Mini 1/8" quad grid, Mini 1/8" dotted grid, Mini 1/8" isometric grid paper notebook Mini Quad Grid Sketchbook 1-point Perspective ROOM GRID Transparency Sheet