Red end. Boxwood finish. Heavy-duty, 1/8' thick sections. Marked both edges, both sides. Markings embedded into wood. Consecutive inches to 16ths. 16' centers marked in red. Blade and markings protected by longer wearing epoxy finish. Graduated brass slide. 6' folds. Rivet joints. HX46N has a hook; zero falls inside of hook, for distance measuring. X46FN has flat, inside markings, numbering begins on inside of rule.