Alvin Cross Section Grid, 20lb Non-repro Blue 8in x 8in Grid, 11in x 17in, 50 SheetsAlvin Cross Section drafting grid paper, graph drawing paper. 20# basis, acid-free, versatile layout bond, printed with a non-reproducible blue grid on one side with bold inch squares accentuated. Smooth, opaque surface suitable for pencil or ink, this grid drawing paper makes graph and chart drawing easy. Laser, copier, inkjet compatible. Used by draftsmen, architects, engineers for drawing diagrams, plotting mathematical functions, experimental data, etc. 8x8 grid cross section, 11 x 17, PAD OF 50 SHEETS