Armada Metal Ruler 18"-Cork Back Great ruler for arts and crafts Made of stainless steel for a rust proof long life Has a handy corked back for no slipping Features a hole in one end for easy hanging Measures 18-inch length Cork-Backed Metal Ruler This ruler features a corked back to prevent damage and resist slipping A hole in one end for easy hanging A stainless steel construction for a rust proof long life Inches along one edge (to the 1/32) with metric along the other (to the mm)