This ruler is constructed of stainless steel and features acid etched graduations to ensure maximum accuracy and durability. One side of the ruler is in inches, with graduations every 1/16 in. (every 1/32 in. up to 3 in. and every 1/64 in. between 3 and 4 in.); the other side is metric, with graduations every mm. (every half mm. up to 10 cm.). The ruler also has a handy conversion table (from inches to millimeters) etched into its back. The ruler is 36 in. long and 2 in. wide.