Impact-resistant, self-standing case. Heavy-duty, 0.008 in/0.2 mm thick, yellow clad blade protected by an abrasion-resistant coating. Extends, rewinds in less time. Easy to read bold black markings with hook ring at zero. Black and red markings one side only. Graduated feet and inches to 1/8ths with instantaneous readings. 16 in centers indicated by a diamond.