Steel scale in hardened stainless steel with matt chrome-plated surface for anti-glare reading. Graduated in millimetres along the upper edge, and half millimetres on lower edge. The reverse side is blank. Manufactured in hardened stainless steel for extra durability, graduated in millimetres on the upper edge, half millimetres on the lower edge and decimetre figures in red with a tolerance & plusmn 0.3mm