24 inch flexible steel rule can be used to measure rounded or cambered work, or as a straight edge SPI's EZ-View rulers features easy-to-read white graduations etched on black nonglare surface 3R Graduations read in 32nds, 64ths, 10ths, and 50ths of an inch Industrial quality precision steel rule 28 inches long x 0.75 inch wide x 0.02 inch thick 24 inch flexible steel rule can be used to measure rounded or cambered work, or as a straight edge. SPI's EZ-View rulers features easy-to-read white graduations etched on black nonglare surface. 3R Graduations read in 32nds, 64ths, 10ths, and 50ths of an inch. Industrial quality precision steel rule. 24 inches long x 0.75 inch wide x 0.02 inch thick.