Alvin Cross Section grid paper for drawing. 20# basis, acid-free, versatile layout bond, printed with a non-reproducible blue grid on one side WITH BOLD INCH SQUARES HIGHLIGHTED. 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. Available in 4x4, 8x8, or 10x10 cross section grids. Quality-made in the USA.