Workers in this group engrave lithographic stones and printing plates, rollers, dies and blocks by various processes other than photogravure. Their functions include: cutting designs through film of gum arabic or other substances applied to surface of lithographic stone; engraving steel and copper plates, rollers, dies and wood, rubber and linoleum blocks by hand; engraving soft metal rollers by machine; engraving metal plates and rollers with pantograph machine; transferring designs from lithographic stone to metal plates; etching metal plates or rollers with acid; performing related tasks. Engraver and etcher (artistic) is classified in 1-61.50. Photo-engravers are classified in unit group 9-25.