Wood Folding Rule, Inside Reading Klein Tools 900-6 Strong, 6-foot (1.83 m) long hardwood rules with clear abrasion-resistant coating Riveted lock joints are designed for long wear and maintained accuracy Black markings on yellow, with red stud center markings every 16-Inches Measurements are marked on both sides and both edges, graduated to 1/16-Inch Engraved graduations on both sides