RULE/YARDSTICK FEATURES Designed to meet the general-utility measuring needs of schools and shops, wood-workers, tinsmiths, metal workers, and bench applications They lie flat, resist bending and feature large , easy to read graduations and numbers that are heavier then conventional machine graduated scales Rules are 24" long and .075" (1.9mm) thick [custom1] SPECIFICATIONS Material: Aluminum Blade Lengths (in): 24" Blade Widths (in): 1-1/8" Thickness (in): .075" Graduation Style: English Graduations: 1/8", 1/16" [/custom1]