The world's most popular paper for manual drafting, tracing and drawing. This 16lb. Vellum is made of 100% cotton and is transparentized without the use of solvents to produce a crisp translucent quality for tracing, drawing or drafting while still maintains a true archival quality. 1000H is equally very strong, easily erased and redrawn upon. Today 1000H is enjoyed by the entire artist community as one of the best surfaces to work on with a transparent quality. Gridded sheets available in pads and sheets provide a perfect background for drawing in perspective.