Marking / Engraving Machines Marking & Engraving equipment marks or engraves products and packages with bar codes, lot codes, date stamps, graphics, labels, and other information. Marks are applied during the manufacturing process, eliminating the need to generate labels or papers for subsequent application.  Liberty Machinery Company buys and sells used Marking / Engraving Machines, Laser Marking. Classified as M0753. Used Marking Machinery in stock: Schmidt, GSI Lumonics, Lumonics, Lightwriter, Light Writer See our Used Marking / Engraving Machines For Sale Back