Isometric Paper, 1/2 Inch Triangle Side, Letter Portrait
Each equilateral cell has a 1/2 inch side length, so vertical guide lines sit about 0.433 inch apart. Large isometric cells suit classroom demonstrations, bold 3D sketches, furniture layouts, and room studies where students need roomy faces to label dimensions. Portrait Letter fits standard US printers when the brief names half-inch triangle sides.
Related grids
1/4 inch triangle side — Letter
1/4 inch equilateral cell edges on Letter portrait. Vertical columns about 0.22 inch apart. True-scale PDF for axonometric sketches.
1/4 inch triangle side — Letter landscape
Landscape isometric paper with 1/4 inch triangle sides on Letter. Wide layout for corridors, floor strips, and long axonometric scenes.
1/4 inch triangle side — A4
1/4 inch equilateral cells on A4 portrait. Vertical columns about 0.22 inch apart. Free PDF for design coursework.
1/4 inch triangle side — A4 landscape
Landscape isometric grid on A4 with 1/4 inch triangle sides. Wide format for game maps and technical strip layouts.
5 mm triangle side — Letter
5 mm equilateral cell edges on Letter portrait. Vertical columns about 4.3 mm apart. Metric three-axis paper for design sketching.