Clear, see-through ruler offers a crystal-clear view of documents while measuring and marking. Contains a standard scale on one edge and metric on the other for the ultimate in versatility. Durable and sturdy construction to ensure it lasts a long time. A valuable tool in the home, classroom, office, warehouse, store, or at the job site. Sturdy plastic for continued use.Clear, see-through ruler offers a crystal-clear view of documents while measuring and marking. Contains a standard scale on one edge and metric on the other for the ultimate in versatility. Durable and sturdy construction to ensure it lasts a long time. A valuable tool in the home, classroom, office, warehouse, store, or at the job site. Sturdy plastic for continued use.